Calculate difference betweeb two rows with functioning slicer

[RonBee]

Hello Power BI community,

I am trying to get the difference between two rows of a time series data, and my raw data looks like this:

What I want to achieve is the difference between sales today and the previous day, wherein a slicer can still function if I want to slice and diced based on Customer or Account Manager. Below is the sample view:

Note that I was able to get the difference between two rows by grouping the data in power query, then creating indexes BUT I can't establish a relationship between the raw data and the summarized data, hence the slicer are not working on my visual.

Thanks for the help!

[v-kkf-msft · Accepted solution]

Hi @RonBee ,

I think the most appropriate approach is to create a measure using DAX.

Measure = 
VAR previous_day =
    CALCULATE (
        SUM ( 'Table'[Ordered Qty] ),
        FILTER ( ALLSELECTED ( 'Table' ), 'Table'[Date] = MAX ( 'Table'[Date] ) - 1 )
    )
RETURN
    IF ( previous_day <> BLANK (), SUM ( 'Table'[Ordered Qty] ) - previous_day )

If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.
Best Regards,
Winniz
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[RonBee]

This solution works! Thank you so much. 🙂 

[lbendlin]

Please provide sanitized sample data that fully covers your issue. If you paste the data into a table in your post or use one of the file services it will be easier to assist you. I cannot use screenshots of your source data.

Please show the expected outcome based on the sample data you provided. Screenshots of the expected outcome are ok.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523