Help with Variance calculation with current month vs selected month from slicer

Hi, Diva20 

It’s my pleasure to answer for you.

According to your description,You should have a date column or a date table, and your oppurtunities column seems to be a measure, so ,you can add a separate month column as a slicer through ‘enter data’,then create a measure to calculate the desired result.

Like this:

Variance P + Companies =
VAR a =
    SELECTEDVALUE ( 'Table (2)'[Month] )
VAR b =
    CALCULATE (
        [Measure],
        FILTER ( ALL ( 'Table' ), 'Table'[Month] = SELECTEDVALUE ( 'Table'[Month] ) )
    )
VAR c =
    CALCULATE (
        [Measure],
        FILTER (
            ALL ( 'Table' ),
            'Table'[Month] = SELECTEDVALUE ( 'Table (2)'[Month] )
        )
    )
RETURN
    IF ( ISBLANK ( [Measure] ), 0, c - b )

Here is my sample .pbix file.Hope it helps.

If it doesn’t solve your problem, please feel free to ask me.

Best Regards

Janey Guo

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