Subtract previous average from current average

Hi Anonymous,

You may try this solution.

1 Create a Calculated column

Date =
VAR Month_ =
    SWITCH (
        LEFT ( 'Table'[Survey Period], 3 ),
        "Jan", 1,
        "Feb", 2,
        "Mar", 3,
        "Apr", 4,
        "May", 5,
        "Jun", 6,
        "Jul", 7,
        "Aug", 8,
        "Sep", 9,
        "Oct", 10,
        "Nov", 11,
        "Dec", 12
    )
VAR Year_ =
    2000 + RIGHT ( 'Table'[Survey Period], 2 )
RETURN
    DATE ( Year_, Month_, 1 )

2 Create the following Measures

Current = CALCULATE(AVERAGE('Table'[Satisfaction]),FILTER(ALL('Table'),'Table'[Date]<=MAX('Table'[Date])))

Previous = CALCULATE([Current],FILTER(ALL('Table'),'Table'[Date]<MAX('Table'[Date])))

Difference = IF(ISBLANK([Previous]),BLANK(),[Current]-[Previous])

Then, the result looks like this.

Also, attach the pbix file as reference. Hope it helps.

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let me know. Thanks a lot!

Best Regards,

Community Support Team _ Caiyun