Write the price and the item's percentage discount. For example, an item costs $50 and the discount is 10 percent.
Convert the percentage into a dollar amount. In the example of the $50 item, you take the percentage discount, 10, and divide it by 100, or 10/100. Then you multiply by the price of $50. In other words:10/100x50. The discount is $5.
More examples for a 10 percent discount:
If the price is $100, the formula is 10/100x100. The discount is $10.
If the price is $1, the formula is 10/100x1. The discount is 1 cent.
Subtract the price from the discount. In the example, subtract $50 from $5. The answer is $45, the adjusted price.