Problem with %A function

Hi Gurus,

in one of our BW report we used %A function, as it is displaying correct values in all the scenarios but not when the right hand side parameter is negative.

Please check the below Screen shot.

First two columns represents Previous Period(PP),Current Period(CP), 5th column is the variance value,6th column is the variance in %.

Variance value = CP - PP

Variance in % = CP-PP/PP * 100.

Please suggest if you had any comments.

Regards,

Ram