Hi,

I think that the confusion is about the basis on which you calculate the margin. There are normaly 2 ways to calculate a margin

1. cost price

Price Cost Result
8.00 2.00 300% && made 300% above cost
2.00 8.00 -75% && lost 75% of cost

2. sold price

Price Cost Result
8.00 2.00 75% && made 75% on price
2.00 8.00 -300% && lost 300% on price

Depending on how the client wants to see his margins you can display the value's you need or just display both of them and let the client decide.

Guillaume