Difference between two columns in matrix visualisation

HI Anonymous,

Please try to use below formula to replace amount column and drag it to value field. then you will find diff effect apply on total level.

Diff =
IF (
    ISFILTERED ( Table[Date] ),
    SUM ( Table[Amount] ),
    CALCULATE (
        SUM ( Table[Amount] ),
        VALUES ( Table[Company] ),
        Table[Date] = 201806
    )
        - CALCULATE (
            SUM ( Table[Amount] ),
            VALUES ( Table[Company] ),
            Table[Date] = 201807
        )
)

Regards,

Xiaoxin Sheng