How do I pull out amt changed from cumulating sum while ignoring initial value?

Hi sensemaker14 ,

I adjust something, please try below steps:

1. add a new column with below dax formula

RK =
VAR cur_year = [Year]
VAR tmp =
    FILTER ( ALL ( 'Table' ), 'Table'[Year] = cur_year )
RETURN
    RANKX ( tmp, [Index],, ASC, DENSE )

2. use this dax formula to replace above same name measure

Adjust Contribute =
VAR cur_rk =
    SELECTEDVALUE ( 'Table'[RK] )
VAR cur_year =
    SELECTEDVALUE ( 'Table'[Year] )
VAR cur__ct =
    CALCULATE (
        MAX ( 'Table'[Contributed Capital] ),
        'Table'[RK] = cur_rk
            && 'Table'[Year] = cur_year,
        ALL ( 'Table' )
    )
VAR pre_ct =
    CALCULATE (
        MAX ( 'Table'[Contributed Capital] ),
        'Table'[RK] = cur_rk - 1
            && 'Table'[Year] = cur_year,
        ALL ( 'Table' )
    )
RETURN
    IF ( cur_rk = 1, 0, cur__ct - pre_ct )

3. then you could get the output

Please refer the attached .pbix file.

Best regards,
Community Support Team_ Binbin Yu
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