How percentage discounts work
A percentage discount reduces a price by a set share of its original value. It is one of the most common ways retailers advertise sales, from “20% off” tags to seasonal clearance events.
The formula
Savings = Original Price × (Discount% ÷ 100), and Sale Price = Original Price − Savings. For example, a $100 item at 20% off saves you $20, for a final price of $80.
Enter the original price and discount percentage above to see your savings and final price instantly. This tool is for general shopping and budgeting use; always confirm the final price at checkout, as taxes and additional fees are not included.
Last reviewed August 2026