How to compute exclusive % with out using Row ?

[#1]

Hi All

From HIC blog have show us the inclusive % using below expression :-

RangeSum(Above(Sum(sales), 0, RowNo())) / Sum(total sales)

I need to replace with , because if using row , it will not allow me sort sales col from hi to lo:-

Sum(sales)/Sum(TOTAL(sales))

For Exclusive % using below expression :-

RangeSum(Above(Sum(sales), 1, RowNo())) / Sum(total sales)

I like to ask , how to replace the above with out using row ?

Paul