Convert the percent to a decimal by placing a decimal two places to the left of the number in the ones position (farthest to the right). For example, 50 percent would become 0.50, and 5 percent would become 0.05.
Multiply the decimal figure from Step 1 times the total price of the item. For example, if a toy is normally $30 and is 25 percent off, multiply 0.25 times 30 to get 7.5 or $7.50.
Subtract your answer from Step 2 from the original price to find the new cost of the item. In this example, you would subtract $7.50 from $30 to get a new price of $22.50.