Dynamic Total Calculation Issue- Need Help on achieving the correct totals

Hi Anonymous ，
Here some steps that I want to share, you can check them if they suitable for your requirement.
Here is my test data:

Create measures

SUM = SUM('Table'[Sales])

SUM BY SEGMENT = 
CALCULATE(
    [Total Sales],
    REMOVEFILTERS('Table'[MANUFACTURER]),
    VALUES('Table'[SEGMENT])
)

Total Sales = 
CALCULATE(
    SUM('Table'[Sales]),
    ALL('Table'[MANUFACTURER])
)

Percentage = [SUM]/[SUM BY SEGMENT]

These will calculate the percentage of the same SEGMENT that each MANUFACTURER accounts for, and if you want to display the total even after selecting the MANUFACTURER, you can do so by simply selecting the option in the MANUFACTURER
Final output

Best regards,

Albert He

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