Running Total per Month from a Measure

Hi AlbLS 

I've simplified this for you, hope its what you need.

# Entries = COUNTROWS( Entries ) 

# Departures = COUNTROWS( Departures )

# Difference = [# Entries] - [# Departures]

# Difference Running Total = 
IF( 
    NOT ISEMPTY( Departures ) || NOT ISEMPTY( Entries ),
    CALCULATE(
        [# Difference],
        FILTER(
            ALL( 'Date' ),
            'Date'[Date] <= MAX( 'Date'[Date] )
        )
    )
)

Best Regards,
Mariusz

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