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How to Calculate Rolling 90 days - Help needed

TonyAus

New Member
I have a KPI for "Support Renewal Rate per Month", previously it was measured per month but now it needs to be measured by rolling 90 days.

How could i do this in excel, i know all our customers start and ends dates but don't know where to start.

Regards,
Tony
 
Last edited:
TonyAus
Please, reread Forum Rules
Especially How to get the Best Results at Chandoo.org
There are useful hints, which You seems ... just remember (someone would write forget).
= You have many things ... but others ... of course, could guess what, where and so on...
 
TonyAus
Did I write that You did something ... right?
I tried to give a hint, which would help You to get solution.
Did You read How to get the Best Results at Chandoo.org?
There is sentence
For the best/fastest results, Upload a Sample File using the "Upload a File" button at the bottom of the page.
Which would give others that You, better image of Your challenge ... okay?
 
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