calculate two adjacent columns based on two different time spans in a matrix visual

Hi harish_2203,

I'd like to suggest you do unpivot column on these value fields to convert them to Attribute and Value. 

Unpivot columns - Power Query | Microsoft Learn

Then you can use the 'Attribute' on the row, 'date' field on the column to design matrix visual. (you can create a slicer with date field to control which date range of records displayed on matrix)

After these steps, you can create a measure formula with if statement to check current hierarchy level to redirect different expressions to aggregated value field values(detail level) or calculate the difference based on detail level.

formula =
VAR _start =
    MIN ( Table1[Date] )
VAR _end =
    MAX ( Table1[Date] )
RETURN
    IF (
        HASONEVALUE ( Table[Date] ),
        SUM ( Table[Value] ),
        CALCULATE (
            CALCULATE ( SUM ( Table1[Value] ), [Date] = _end )
                - CALCULATE ( SUM ( Table1[Value] ), [Date] = _start ),
            ALLSELECTED ( Table1 ),
            VALUES ( Table1[Attribute] )
        )
    )

Regards,

Xiaoxin Sheng