Lets say you are responsible for sales of 100s of products (which belong to handful of categories). You are looking at sales of each product in last month & this month. And you want to understand whether sales are improving or declining by category. How would you do it?
Turns out, this is not a difficult problem. In fact, this question is asked every day & answered using Advances vs. Declines chart.
You may have seen this chart in financial newspapers or websites. Shown below, Advances vs. Declines chart tells us how many items have advanced & how many have declined.
When should you use Advances vs. Declines chart?
As you can see, advances vs. declines chart does not give low level details about actual movement of values. Instead, it gives you a sense of what is going on. Use it in below situations:
- To get a feel of how values have changed over time.
- When you are dealing with data that constantly changes (sales, number of customers, defects etc.)
Create Advances vs. Declines chart in Excel
You can easily create this chart in Excel from raw data. Just follow below tutorial.
Step 1: Get the data & arrange it
You need at least 4 columns of data – item, category, previous value, current value
Once we have these, calculate % change in 5th column. Arrange data like below:
Step 2: Calculate Category-wise summaries
First list all unique categories in a column. Then using COUNTIFS formula, calculate the number of products declining & advancing.
The formula to count number of products going down by more than 10% is,
=COUNTIFS(Sales[category], Category name, Sales[% change], “<10%”)
[Related: Introduction to Excel SUMIFS / COUNTIFS Formulas]
Step 3: Calculate % break-ups for the chart
Once all the numbers are calculated, you can easily calculate the % split.
NOTE: Make sure you negate the % values for declines. This will ensure that our chart shows stacked bars on both sides of axis.
Step 4: Create a stacked bar chart from this data
Once all the numbers are in place, just select them and create a stacked bar chart. Your output should look like below:
Step 5: Adjust chart series order if needed
You may notice that, our stacked chart bars are not in correct order. Excel would have plotted <10% and >10% series before <0% and >0% series. To fix this:
- Right click on the chart
- Go to Select Data
- Now, select the series area
- Using up / down buttons adjust the order of series
- Done!
See this demo to understand:
Step 6: Adjust the colors & format the chart
Unleash your creativity and format the chart as you see fit. Make sure you add legend (otherwise the chart becomes very difficult to read).
And you are done!
Download Advances vs. Declines chart template
Click here to download the chart template. Examine the formulas & chart settings to understand this better.
Do you use Advances vs. Declines chart?
I use variations of this chart often in my dashboards & reports. These charts are very concise and present a lot of information about distribution of changes.
What about you? Do you use advances vs. declines charts? How do you create them? Share your experiences & techniques using comments.
Looking to advance your charting knowledge?
If you want to one up your Excel awesomeness quotient & create kick-ass charts, then you are at the right place. Check out below tutorials & see how deep the rabbit hole goes:
- Visualizing tax changes over time using Excel
- Index Charts – to understand change over time
- Use Box plots to understand distribution of values
- Visualize monthly changes using Pivot Tables + Conditional formatting
Recommended: If all these sound exciting, you will incredibly benefit from our Excel School program, where we teach advanced charting & data analysis skills. Click here to know more & join us.
14 Responses to “Group Smaller Slices in Pie Charts to Improve Readability”
I think the virtue of pie charts is precisely that they are difficult to decode. In many contexts, you have to release information but you don't want the relationship between values to jump at your reader. That's when pie charts are most useful.
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Chandoo,
millions of ants cannot be mistaken.....There should be a reason why everybody continues using Pie charts, despite what gurus like you or Jon and others say.
one reason could be because we are just used to, so that's what we need to change, the "comfort zone"...
i absolutely agree, since I've been "converted", I just find out that bar charts are clearer, and nicer to the view...
Regards,
Martin
[...] says we can Group Smaller Slices in Pie Charts to Improve Readability. Such a pie has too many labels to fit into a tight space, so you need ro move the labels around [...]
Chandoo -
You ask "Can I use an alternative to pie chart?"
I answer in You Say “Pie”, I Say “Bar”.
This visualization was created because it was easy to print before computers. In this day and age, it should not exist.
I think the 100% Bar Chart is just as useless/unreadable as Pies - we should rename them something like Mama's Strudel Charts - how big a slice would you like, Dear?
My money's with Jon on this topic.
The primary function of any pie chart with more than 2 or 3 data points is to obfuscate. But maybe that is the main purpose, as @Jerome suggests...
@Jerome.. Good point. Also sometimes, there is just no relationship at all.
@Martin... Organized religion is finding it tough to get converts even after 2000+ years of struggle. Jon, Stephen, countless others (and me) are a small army, it would take atleast 5000 more years before pie charts vanish... patience and good to have you here 🙂
@Jon .. very well done sir, very well done.
good points every one...
I've got to throw my vote into Jon's camp (which is also Stephen Few's camp) -- bars just tend to work better. One observation about when we say "what people are used to." There are two distinct groups here (depending on the situation, a person can fall in either one): the person who *creates* the chart and the person who *consumes* the chart. Granted, the consumers are "used to" pie charts. But, it's not like a bar chart is something they would struggle to understand or that would require explanation (like sparklines and bullet graphs). Chart consumers are "used to" consuming whatever is put in front of them. Chart creators, on the other hand, may be "used to" creating pie charts, but that isn't an excuse for them to continue to do so -- many people are used to driving without a seatbelt, leaving lights on in their house needlessly, and forwarding not-all-that-funny anecdotes via email. That doesn't mean the practice shouldn't be discouraged!
[...] example that Chandoo used recently is counting uses of words. Clearly, there are other meanings of “bar” (take bar mitzvah or bar none, for [...]
[…] Grouping smaller slices in pie chart […]
Good article. Is it possible to do that with line charts?
Hi,
Is this available in excel 2013?