Percentage Calculator
Work out percentages, percentage change, increases and discounts.
- 100% free
- Formula shown
Last reviewed by the OnlineToolPro team
What is X% of Y?
Answer
30
20 ÷ 100 × 150
X is what percent of Y?
Answer
25%
30 ÷ 120 × 100
Percentage change from X to Y
Answer
+25%
(100 − 80) ÷ |80| × 100
Increase or decrease X by Y%
Answer
287.5 / 212.5
Increase: X × (1 + Y ÷ 100) · Decrease: X × (1 − Y ÷ 100)
What is the Percentage Calculator?
Four everyday percentage questions in one place: X% of a number, what percent one number is of another, the percentage change between two numbers, and increasing or decreasing by a percentage.
How it works
How to use the Percentage Calculator
3 simple steps. No experience needed.
What can you use it for?
- Work out a discount or sale price.
- Calculate a pay rise or price increase.
- Find the percentage change between two months.
FAQ
Frequently asked questions
How is percentage change calculated?
(new − old) ÷ old × 100. A change from 80 to 100 is +25%.
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