What is 70% off $100?

How it's calculated

1. Find the discount: 70% of $100 = $100 × 0.7 = $70.00
2. Subtract it from the price: $100 − $70.00 = $30.00

Shortcut: with 70% off you pay 30% of the price, so multiply $100 × 0.3 = $30.00 in one step.

Sales tax, if any, is usually added after the discount and isn't included here.