Calculate sum of difference

[Anonymous]

Hi, Gurus!

I have a task where two tables. 

The first table without date field, second with. They are joined by the field "Group", it is the first field from my screenshot.

I need to calculate the sum of the difference between the two measures. 

Measure from the first table i calculate as Measure1 = SUM('Table1'.[Field1])

The second measure from table 2 i calculate as Measure2 = AVERAGE('Table2'.[Filed2])

The problem is I can't get the correct total of difference between fields, but in rows all is correct.

I already tried SUMX, AVERAGEX. Tried to store the result of values on VAR, but it doesn't help

[parry2k · Accepted solution]

@Anonymous try this measure:

New Measure = 
SUMX ( VALUES ( Table[Lpyma Column] ), [Measure] - [Measure2] )

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[Anonymous]

Thanks a lot! It works great