20% off $100 is a discount of $20, so the final sale price is $80. Use the calculator below to change the numbers, or read the step-by-step math.
Formula: $100 × 0.20 = $20 discount. Then $100 − $20 = $80 sale price.
20% off $100 is a discount of $20, so the final sale price is $80.
You save exactly $20. Your out-the-door price (before tax) drops from $100 to $80.
The sale price is $80. Math check: $100 − ($100 × 20/100) = $80.