Previous Period Sales Measure output is the same as Current Period Sales

[Anonymous]

Hello everyone, I'm trying to build out a Sales Previous Period measure, but for some reason the output is the same number as the sales for the current period, do you noticed anything wrong with this?

Sales Last Period =

VAR Sales = SUM(‘Table’[Sales])

VAR PeriodEnd = FIRSTDATE(‘Table’[Date]) -1

VAR PeriodStart =

    PeriodEnd -

    DATEDIFF(

        FIRSTDATE(‘Table’[Date]),

        LASTDATE(‘Table’[Date]),

        DAY

    )

VAR Result =

    CALCULATE(

        Sales,

        DATESBETWEEN(

            ‘Table’[Date],

            PeriodStart,PeriodEnd

        )

)

RETURN

    Result

Thanks!

[Jihwan_Kim · Accepted solution]

Hi,

I am not sure how your data model looks like, but please try the below.

Sales Last Period =
VAR PeriodEnd =
    FIRSTDATE ( 'Table'[Date] ) - 1
VAR PeriodStart =
    PeriodEnd
        - DATEDIFF ( FIRSTDATE ( 'Table'[Date] ), LASTDATE ( 'Table'[Date] ), DAY )
VAR Result =
    CALCULATE (
        SUM ( 'Table'[Sales] ),
        DATESBETWEEN ( 'Table'[Date], PeriodStart, PeriodEnd )
    )
RETURN
    Result

[Anonymous]

Thank you!