Percentage calculator
The three questions people actually ask, answered at once.
What is X% of Y?
30.00
X is what percent of Y?
25.00%
Increase or decrease
+25.00%
Going back the other way is -20.00%, not -25.00%. A rise and the fall that undoes it are never the same percentage.
Questions
- Why is a 20 percent rise not undone by a 20 percent fall?
- Because the second percentage is taken from a bigger number.
- What is the difference between percent and percentage points?
- If a rate goes from 4 percent to 6 percent, that is a rise of 2 percentage points, but a rise of 50 percent.
- How do I take a percentage off a price?
- Use the first box: work out what the discount is worth, then subtract.