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powerbi formula based on row value


I have a formula checking previous row value if equal extracting from previous value of row other vise doing another calculation.

how can I do , I tried with index but received error.

formula on column Y


Solution Supplier
Solution Supplier

@swordm - pls try this Power Query Custom Column measure.


If this post helps to find solution would be happy if you could mark my post as a solution and give it a thumbs up


Best regards

Manoj Nair

Linkedin -

Hi Tank you,

Partially works but when I try to substract from pervious value at saome column gives error any idea ?2023-01-14 22_58_17-Custom Column.png

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