What is a 20% discount on $250?

Based on these numbers, the answer is 50.

Three common percentage questions, one calculator

What is X% of Y? — for example, a 20% tip on a $150 bill: 20% of 150 = 30.

X is what percent of Y? — for example, if you scored 30 out of 150 on a test: 30 is 20% of 150.

Percentage increase or decrease from X to Y — for example, a salary that went from $100 to $150 increased by 50%; one that went from $150 to $100 decreased by about 33.3%. This calculator shows the direction (increase or decrease) automatically based on which number is larger.

Works with any currency, or none

This calculator doesn’t care what the numbers represent — dollars, rupees, points, kilograms, anything. Percentages are just ratios, so the same math applies everywhere in the world.