Hello!

I am very new to Excel and have downloaded a Sales Invoice Template (not
sure what it is called).

I have fields in this template for:
Quantity
Unit Price
Total
(going accross template)
Then at the bottom there are these fields:
Sub Total
Shipping
Tax Rate
TOTAL
What I would like is to have a Percentage Discount field for a $50% discount
before the shipping field.

Is there a way to do this and how can I do it.

Thanks!