Calculate variance between two Matrix in Power Bi

[nwiltshire]

I have two matrixes in power Bi 
user can choose a forecast from point in time and select which month to see the results.

from 1st slicer they choose the first creation date (year and Month)

then they choose which month to see the forecasts for in the 1st matrix 

same for the 2nd matrix for a different point in time 

so, we end up with two matrixes. 

how can I calculate the variance between these two matrixes?

Thanks

results

[lbendlin · Accepted solution]

Please provide sample data that covers your issue or question completely, in a usable format (not as a screenshot).
https://community.powerbi.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-Forum/ba-...
Please show the expected outcome based on the sample data you provided.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523

[nwiltshire]

thanks Will do