How to calculate the difference between columns from different datasets?

[MarcoHaak94]

Hi,

I am pretty new to PowerBI. 

I have two datasets: one from Q2 and one from Q4. I would like to calculate the difference between certain columns of these datasets. I found how to write a formula using DAX for columns in the same dataset, but how to do it for two different datasets?

[lbendlin]

Consider your "datasets" to be independent fact tables.   Next step is to create dimension tables for each of the columns you want to compare (by referencing a combination of your two queries and extracting unique values).  Then wire your data model and create visuals based on the dimensions.