Subtracting two rows

Hi KW123 
Sorry it was too late yesterday I couldn't reply to you. Here is a sample file with the solution jnowing that you will retun back to me with more information that you've been hiding as usual 😉https://www.dropbox.com/t/lzKxh0DxLA056sy7

Result = 
VAR A = 1000
VAR B = 10
VAR CurrentIndex = SELECTEDVALUE ( Data[INDEX] )
VAR MaxIndex = CALCULATE ( MAX ( Data[INDEX] ), ALLEXCEPT ( Data, Data[Day].[Month] ) )
RETURN
    IF ( 
        CurrentIndex <> BLANK ( ),
        A - ( MaxIndex - CurrentIndex ) * B
    )

KW123 

What does YTD total need to be =
VAR A = [Accounting goal calc-c]
VAR B = [Daily Goal]
VAR CurrentIndex =
    SELECTEDVALUE ( Dates[FD2] )
VAR MaxIndex =
    CALCULATE ( MIN ( Dates[FD2] ), ALLEXCEPT ( Dates, Dates[Date] ) )
RETURN
    IF (
        DAY ( SELECTEDVALUE ( Dates[Day] ) ) = 1
            && MONTH ( SELECTEDVALUE ( Dates[Day] ) ) = 1,
        0,
        IF ( CurrentIndex <> BLANK (), A + ( MaxIndex - CurrentIndex ) * B )
    )