Percentage Calculator
Solve the most common percentage problems instantly. Fill in any calculator below and the answer updates as you type, with the formula shown for reference.
Percentage of a number
What is% of?
Result:
(X ÷ 100) × Y
What percent is X of Y
is what % of?
Result:
(X ÷ Y) × 100
Percentage change
Fromto
Result:
((Y − X) ÷ |X|) × 100
Find the whole
is% of what?
Result:
X × 100 ÷ Y
Increase by a percentage
Increaseby%
Result:
X × (1 + Y ÷ 100)
Decrease by a percentage
Decreaseby%
Result:
X × (1 − Y ÷ 100)
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 20% of 150 is 150 × 20 ÷ 100 = 30.
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value and multiply by 100. For example, going from 50 to 65 is (65 − 50) ÷ 50 × 100 = 30% increase.
What is the difference between percentage change and percentage points?
Percentage points are the simple difference between two percentages (e.g. 10% to 12% is +2 points), while percentage change is relative (10% to 12% is a 20% increase).