Calculate Column With Filters

hi, Stuznet

     You can try to use this formula

AprilStartPlan =
SWITCH (
    TRUE (),
    MAX ( DateTable[month] ) = "April", CALCULATE (
        COUNT ( Data[ID] ),
        FILTER (
            Data,
            [Plan Month] = "Apr"
                && [Plan Year] = "2018"
                && [SavedDate] = "March"
        )
    ),
    MAX ( DateTable[month] ) = "March", CALCULATE (
        COUNT ( Data[ID] ),
        FILTER (
            Data,
            [Plan Month] = "Mar"
                && [Plan Year] = "2018"
                && [SavedDate] = "March"
        )
    )
)

Result:

here is pbix, please try it.

https://www.dropbox.com/s/gdwrikrf2gkih4h/Calculate%20Column%20With%20Filters.pbix?dl=0

By the way, your error that one ) is missing, there should be two ")" in this.

Best Regards,

Lin