Products that makes 80% of sales.

[#1]

I need to do a pareto, the pareto part is easy using rowno() and sorting by sales, but I have a problem now and I haven't been able to find an answer, I need to order my Straight Table by Product, but need the pareto column to have the right number as if it would be ordered by sales.

I want to do this, the problem is that I don't know how to calculate the pareto without ordering by sales.

Product	Sales	Pareto
A	$30,000	85%
B	$10,000	100%
C	$80,000	40%
D	$60,000	70%
E	$20,000	95%

[sunny_talwar]

What is the expression that you are using right now?