Calculate between two fact tables

chewkarann Maybe:

Measure Each Month =
  VAR __StaffDept = DISTINCT('Fact Staff'[Department])
  VAR __Table = FILTER('Fact Department', [Department] IN __StaffDept)
  VAR __Total = SUMX(__Table, [Income])
  VAR __Average = AVERAGEX(__Table, [Income])
  VAR __Result = __Total // __Average
RETURN
  __Result


Measure All Months =
  VAR __StaffDept = DISTINCT('Fact Staff'[Department])
  VAR __Table = FILTER(ALL('Fact Department'), [Department] IN __StaffDept)
  VAR __Total = SUMX(__Table, [Income])
  VAR __Average = AVERAGEX(__Table, [Income])
  VAR __Result = __Total // __Average
RETURN
  __Result

Hi chewkarann,

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