Your cost difference calculation doesn't really make sense , since a row is either A or B you cant calculate the difference using a row calculated field. You need to aggregate before calculating the difference.
You should replace
SUM( [CostA] ) - SUM( [CostB] )
After that ABS([costDiff]) will work as expected
1 of 1 people found this helpful
That was very helpful. Really appreciate your speedy response!!!!!!