What is 20% off a $50 item?
The discount is $10 (20% of $50). The sale price is $50 − $10 = $40, or in one step $50 × 0.80.
Detailed answer
“Percent off” the list price means the discount equals that percent times the original price. 20 ÷ 100 = 0.20; 0.20 × 50 = 10 saved. Subtract from 50 for the new price, or use Value After Change with −20% on 50 to read the final price directly.
Relationship context
Stores often show both “$10 off” and “20% off”; Basic Percentage isolates the dollar discount, while Value After Change emphasizes the checkout price.
Worked example
Basic Percentage: 20%, Number = 50 (discount dollars).
Same math as the live tool: Basic Percentage, Percentage Change, Percentage Of, and Value After Change.
Percentage Calculator modes
One page covers four patterns: percent of a total, part-to-whole percent, percent change between two values, and final value after a percent increase or decrease—with recent history on your device.