Matrix with variation calculation for one period only

[FilipaPereira]

I needed to build a matrix like this, in which I have a three-month view of the last two years and in which I only have the variation calculated for the last month.
How do I do this and power bi?
Can anyone help?

[v-kpoloju-msft]

Hi @FilipaPereira,
Thank you for reaching out to the Microsoft fabric community forum. 

I reproduced the scenario, and it worked on my end. I used it as sample data and successfully implemented it.

I am also including .pbix file for your better understanding, please have a look into it:

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