So I have to keep one month as the base? It is possible to have a system where you can easily change the base month? for example I want to compare february and january, as well as this month to last. I want to have system that is as automatically as possible.

Please see the attached file.:
If I am gonna insert the numbers for May month, I then want May to be the base. So, either have a system where you can choose which month that is the base OR have a system where the last month is always the base.

Was that understandable?

Thank you!

Dilemma 5.xlsx