Pivot dimension percentaje column

[Ronald]

Hi need the percentage of my Column; the dimensions are Prod, Esp, but the dimension Tot is created; the total for Esp1 is 91, the percentaje is 11/91

%P1 = 11/91

91 is total sum for Esp1

11 is Mat0 value

Mat0=Sum({<Mes={'M24','M23','M22','M21','M20','M19','M18','M17','M16','M15','M14','M13'}>} Px)