Let’s say you are the people manager at ACME Inc. You are looking staff list for the months – January and February 2017. You see that we had 4,000 employees in Jan and 4,200 employees in Feb. So what is the churn?
- Is it just 200?
- Or is it the sum of people who left and who joined?
- What if you want to find out how many people moved to new designations / departments or groups?
You see, churn is tricky to figure out.
So why not invite the pros? ie Power Query.
Side note: You could also calculate churn in Excel (using formulas) or in SQL (by using long queries and unions with a boat load of joins)
Setting up your data – Churn analysis
The first step is to set up two sets of data (one for each point in time). Make sure that you include only relevant columns. Let’s say we go with below layout.
For the sake of simplicity, let’s call these tables thismonth and lastmonth. You can include the data date columns, but they are not necessary for the analysis.
Define churn
We can categorize churn in to one of these 6 levels.
- New employees
- Exits
- People who moved to a new group
- People who moved to a new branch
- People who moved to a new designation
- No changes
Figuring out the churn – Power Query
Here is the process to calculate the churn using Power Query.
- We create a third query by merging two datasets (thismonth and lastmonth) on employee number as Full Outer join (think of this as A union B in sets – ie any employee present in either months will be included)
- We define a custom column in this new query, called status. It will have
- New employees if emp number is null in last month’s column
- Exit if emp number is null in this month’s column
- New group if thismonth.group <> lastmonth.group
- New Branch if thismonth.branch <> lastmonth.branch
- New Designation if thismonth.designation <> lastmonth.designation
- No changes else
- We delete all rows with no changes (as we are only interested in churn)
- Load this data to Excel
Figuring out employee churn – Power Query lesson video
Since the process is somewhat technical and confusing, I made a video explaining everything in detail. Check it out below.
You can watch this video on our youtube channel too.
Download Example Workbook
Click here to download example workbook. You must have Power Query 2013 or Excel 2016 to customize anything.
More on Power Query
Power Query is awesome. If you haven’t explored its power, check out below tutorials and get started.
- Introduction to Power Query
- Unpivot data quickly with Power Query
- How to import web data to Excel using Power Query
- Recommended training: Power Query by Ken Puls
How do you calculate churn?
As mentioned earlier, we can use either Excel formulas or SQL to calculate churn. If I am only interested in high-level churn (ie entries and exits), I use a simple formula. But for anything more than that, I prefer Power Query or SQL (as PQ is not be available in all versions of Excel)
What about you? How do you calculate and analyze churn? Please share your approach and tips in the comments.
54 Responses
Hi Chandoo,
This is awesome *****
Found 6, just one remaining, and I think it should be in sheet2, as I found 1 in each sheet but didn’t found anything in sheet2 (till yet, I am keep looking).
Very cleaver and amazing work, enjoyed a lot…
Thanks Chandoo for this beautiful work.
Wish you have great time at Hyderabad.
Regards,
Khalid
go to AB201 on Sheet2, you will see Panda there !!!
Press F2 in Cell A1 and then read the actual text !!
In Sheet 2 go to Cell AB201. You will find one.
There is one on first sheet, if you press F5 (goto), the word PANDA can be seen there.
Oh I found the last one, (custom format hmm)
Truly Amazing and the beauty of this forum.
You are an Artist Chandoo.
Hi Chandoo,
Wow, you really have magical skills. I am in office and this sheet ate up an hour of my time….didn’t expect that.
I could find 5 of the 7 pandas. Didn’t know one could hide so much data in innocent looking excel sheets.
Thanks!
-Ranjith
yeah! found all 7 panda, time to go to china.
This was very fun and challenging, thanks for posting! I found all of them (well, Sheet1 was tricky, it seems you’re supposed to find the cell and type it in yourself?). Wasn’t sure if it was cool to post the answers here or not, though. Guess I’ll post SPOILER ALERTS so you can skip the rest of the message if you don’t want to see what I came up with.
SPOILER! SPOILER! SPOILER!
My answers appear below.
Sheet1: type PANDA in cell PAN3489
Sheet2: cell AB201
Sheet3: cell J8 (Picture1)
Sheet4: cell H9
Sheet5: expand Chart1
Sheet6: formula = “=MID(ADDRESS(9,2^3*23*59,4),1,3)&BIN2HEX(11011010)”
Sheet7: named range (A1:I18)
Wookie – I would love to get a walkthrough of HOW you figured out sheet 1 and a bit of a formula walkthrough for Sheet 6.
Basically, I don’t know how I could have found that particular cell input message on Sheet 1.
And I have no clue about the BIN2HEX part of the formula…before your hint I was able to get the output to read AN9DA. The change to MID and the addition of that ‘,1’ changed it to PANDA…
Hi Rachel,
To get to the cell in sheet 1 you can press: ctrl G. Then special and then data validation: all. This is also the way to find panda in sheet 7 😉
I agree, this was a fun way to test your ability to navigate through the functionality of Excel! And since you already posted the SPOILER ALERT warning, I should be safe posting a reply to your comment with some solutions of my own… 🙂
I found all the same solutions you did with a few minor changes:
Sheet1: If you notice, cell PAN3489 has Custom formatting. You don’t have to type “PANDA”, just the number 1.
Sheet6: The MID function works as you described, but you can also simply change the RIGHT function to the LEFT function without having to add in the start and end positions for MID.
Sheet7: Yes, the range name for these cells is called PANDA, but you don’t see the actual word in the sheet unless you change the Zoom setting to 39% or less (hence the clue “Z” 39%).
Thanks again for a great post, Chandoo!!
I must admit sheet 7 defeated me, but I have some corrections
Sheet 1 – you type =LEFT(ADDRESS(ROW(),COLUMN(),2),3)&DEC2HEX(ROW())
in PAN3489 to get “PANDA1”. As it is the first panda. I think panda1 is appropriate, but maybe
=LEFT(ADDRESS(ROW(),COLUMN(),2),3)&LEFT(DEC2HEX(ROW()),2)
is better, because it leaves you with “PANDA”
Sheet 6 – I corrected to
=LEFT(ADDRESS(9,2^3*23*59,4),3)&BIN2HEX(11011010)
Picky I know, but who uses mid when a right or a left will do?
I know; that was weird. I did try using a LEFT formula, but I kept getting the $ prefix from the cell address. So I tried a couple of variations using MID and it gave me the result I needed. This is actually the first time I’ve ever tried using a MID formula starting at the first character, but I wasn’t trying to spend a lot of time on it, so I went with what worked.
Sheet1: Type 1 in PAN3489
Sheet6: =LEFT(ADDRESS(9,2^3*23*59,4),3)&BIN2HEX(11011010)
Slight change…
For sheet 1 goto PAN3489 and type in 1. The word PANDA appears.
Love it!
Sheet 6 was my favorite. How many people still know what binary, hex and octal are? :o)
—–Spoilers———
Alternate Solutions
1) Type “1” (not the quotes) in PAN3489 and Excel will turn “1” into “PANDA”
6) The formula Wookie lists also works with LEFT in place of MID
Lot of fun. Solve time ~20 mins.
@ Rob
How this 1 turns to PANDA .. means How this is done by excel any formula or something in VBA
Also how to reach cell PAN3489 .. there are no clues given on sheet 1
You reach PAN3489 by pressing Ctrl + End to bring you to the last used cell in Sheet 1
@ Navdeep I found PAN3489 by going to “Formulas” and then “Name Manager” and saw there was a field called “Clue1” listed in the Name Manger that references 3489. Finding PAN as the column index was just a bit of a lucky guess through trial and error. Then a note in cell PAN3489 when you navigate there says to try “typing something.” I tried scrolling through the Format Cells menu to see if the text typed in the cell needed to be formatted a certain way, and noticed that “1= Panda” was listed in the custom text menu and tried it. A bit brute force, but I think the desired text entry.
Clever!
The Data Validation one took me a bit. Had to resort to brute force.
Thanks for the fun!
Awesome! Found 7 pandas in 20 minutes)))
Sheets 1 and 6 were the best!
Thanks!
Sheet 1: The answer is not type in Panda. Type 1. There’s a special formatting that replaces 1 with Panda.
Sheet 6: Just replace right with left, don’t worry about changing the numbers.
Sheet 7: I found the named range, but don’t know what the Z 39% means. Thoughts?
when you changed the zoom level to 39% or below, you will see the name of namedrange (if any)
WOW! I’ve just found the secret eighth PANDA!
Truly awesome!!!
Am I the first one who figured that out, guys?
Btw, thanks for the puzzle!
Found them all – very inventive. Had to think outside the “box”. Great fun!
It was truly a artists work
chandoo you are grate
all sheets are deigned different from each other
@Wookiee: you have a good for others by posting the answers, Thank you too
it is fun and great invent
Guys I Got 8 PANDA in the workbook… 🙂
[Look Chandoo has against played great trick by reserving one more ester egg, but we are also fan of none other than Chandoo, who can get hold of hidden 8th (untold) ester egg]
Here is the full list:
1) Sheet1: Type 1 in Cell PAN3489
2) Sheet2: Goto Cell AB201
3) Sheet3: Check the picture located above cell J8
4) Sheet4: Goto Cell H8
5) Sheet5: Cells, viz., A4, A10, A16, A21, A29 have all alphabets of PANDA
6) Sheet5: Resize the chart to see PANDA
7) Sheet6: Correct the formula as LEFT(ADDRESS(9,2^3*23*59,4),3)&BIN2HEX(11011010)
8) Sheet7: Range A1:I18 is named as PANDA
1) Sheet1: Type 1 in Cell PAN3489
2) Sheet2: Goto Cell AB201
3) Sheet3: Check the picture in the cell J8
4) Sheet4: Goto Cell H9
5) Sheet5: Resize the chart to see PANDA
6) Sheet6: Correct the formula as LEFT(ADDRESS(9,2^3*23*59,4),3)&BIN2HEX(11011010)
7) Sheet7: Range A1:I18 is named as PANDA
Actually, for sheet7, if you set the zoom to 39% or less, you will see the word PANDA. Yet another PANDA! 🙂
Hi,
i want to know how to manage bill wise manage vendor invoice and payment in excel please suggest.
Thanks,
Ram
Hi Chandoo!
You rock with these amazing skills!
Sheet 1: ??
Sheet 2: ??
Sheet 3: Cell J8
Sheet 4: Cell H9
Sheet 5: A4, A10, A16, A21, A29
Sheet 6: B2
Sheet 7: ???
Sheet1 F5
Sheet2 AB201
Sheet3 Picture1
Sheet4 H9
Sheet5 Chart
Sheet7 Zoom to 30%
I love this time of year and look forward to Chandoo’s egg hunts. Whilst I got all the pandas, I do not understand how sheet 7 works; Where is the source data and why does it only work when zoomed out to 39% or more?
@Leon-K
When you change the zoom level to be less than 40% Excel shows the Ranges which have Names applied to them
Ha ha, that’s fantastic. Thanks Hui. @Chandoo, thanks for yet another method to decrypt worksheets in order to re-build or explain them better to clients.
These were fantastic and kept me intrigued until I could finish them. (Had to look here for help with Sheet1!) Definitely learning a lot about some new formulas. Awesome, Chandoo!
Ok, just saw the notes on the Zoom 39% on Sheet 7. Can someone explain what’s happening here and why PANDA shows up at that level?
@Bryan
When you change the zoom level to be less than 40% Excel shows the Ranges which have Names applied to them
Wow, great exercise.
Tried and solved 5 out of seven and other two solved incorrectly (1 & 6).
Thanks 🙂
Hi Chandoo,
Gr8 …had fun in searching it. I got 5 out of 7.
You are brilliant.
Found all except in sheet6 as not able to understand formula.
thanks
Raja Aurongzeb
Hi,
I am not able to find 1st Panda, which is on Sheet1. Rest all I have found.
Wonderful Chandooji… you are brilliant.
Wow.. Awesome set of puzzles Chandoo!!
Am now trying to figure out how sheet 7 was prepared.. 39% Zoom setting logic.. Can someone help me with a hint?
Thanks!
Looks like this is an XL feature.. Zooming out the worksheets below 40% level, by default displays all named ranges (more than 2 cells)! Had not come across this till date..
Great works! Was having FUN in finding the pandas. Thanks.
btw, I used one basic function (Find, CTRL+F) to find 2 pandas. Simply Find “Panda” within “Workbook”… To my surprise, seems no one mentioned that in the process.
On other other hand, Selection and Visibility Pane is a handy tool to see if there is “extra” shapes for locating pandas hidden in chart/picture.
Had fun doing this, Found 5 and the rest I saw clues on here 🙂
I really enjoyed when finding the pandas.And also I am so surprised.Very Nice thought and Excellent.
This was fun! Thanks!
Nice and fun post. Thanks, Chandoo!