Instant Percentage, Discount & Change Calculator
Work out percentages, increases, decreases and discounts in seconds. Free and simple.
In plain words: Pick the question you're asking ("what is 15% of 80?", "what's the % increase?") and type the numbers. The answer appears instantly.
๐ Runs in your browser. Nothing you type is sent anywhere โ No email ยท No sign-up ยท No watermark ยท Free
1. What is X% of Y?
What is % of
(20 รท 100) ร 250
2. X is what % of Y?
is what % of
(45 รท 180) ร 100
3. Percentage Increase / Decrease
From to
((108 โ 80) รท 80) ร 100
4. Sale Discount or Markup
%
Difference: 18
๐ Chain next workflow: Jump straight to a related tool
How to Use Instant Percentage, Discount & Change Calculator
- Type numbers into any of the four calculators: "What is X% of Y?", "X is what % of Y?", "Percentage Increase / Decrease" or "Sale Discount or Markup".
- Results update as you type, with the working shown underneath.
- Click any result pill to copy the number to your clipboard.
Four Essential Percentage Formulas Used Every Day
- What is X% of Y?
Result = (X รท 100) ร Y - X is what % of Y?
Percentage = (X รท Y) ร 100 - Percentage Change (from A to B):
Change % = ((B โ A) รท |A|) ร 100 - Discount / Markup (Y ยฑ X%):
Final = Y ร (1 ยฑ X รท 100)