Original list price and sale price—percent off and amount saved.
Percent off list = ((list − sale) ÷ list) × 100; dollar (currency) savings = list − sale. Requires list > 0 and 0 ≤ sale ≤ list.
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.