Calculating difference between columns in matrix view based on filter

[Ninna]

Hi,

let's say I have matrix table visual with months in rows and countries in columns, and in filter I choose which countries I want to compare.

I need to get column (red in picture) that will calculate % difference between selected countries and that depends on what country I choose in filter. 

[tamerj1 · Accepted solution]

Hi @Ninna 
You can activate and rename the total column then place the following measure in the matrix instead of the original measure

ResultMeasure =
VAR NormalValue = [OriginalMeasure]
VAR SelectedCountries =
    ALLSELECTED ( 'Table'[Country] )
VAR Country1 =
    MAXX ( SelectedCountries, 'Table'[Country] )
VAR Country2 =
    MINX ( SelectedCountries, 'Table'[Country] )
VAR Country1Value =
    CALCULATE ( [OriginalMeasure], 'Table'[Country] = Country1 )
VAR Country2Value =
    CALCULATE ( [OriginalMeasure], 'Table'[Country] = Country2 )
VAR Difference = Country2Value - Country1Value
RETURN
    IF ( HASONEVALUE ( 'Table'[Country] ), NormalValue, Difference )

[Ninna]

Great, that is it. Thanks 🙂