Percentage Calculator
Calculate percentages easily: find % of a number, percent change, and more.
Versatile percentage calculator with 4 modes: 1) What is X% of Y? 2) X is what % of Y? 3) Percentage increase/decrease from X to Y 4) Add/subtract percentage from number.
Understanding the tool
About Percentage Calculator
Percentages are used to describe proportions, discounts, increases and decreases. This calculator provides several common percentage calculations without requiring manual formulas.
How to use this tool
Select the type of percentage calculation you need, enter the values and review the result. Always check which value represents the original amount when calculating a percentage change.
A simple example
Before you use the result
Check that you have entered the values in the correct units and that the question you are answering matches the tool you selected. A calculator can produce a precise answer to the wrong question just as easily as the right one.
For important decisions
Use the result as a helpful calculation or estimate. Where money, tax, contracts, compliance or other high-impact decisions are involved, confirm the result against the relevant official information.
Features
- 4 calculation modes
- Real-time results
- Step-by-step explanation
- Percentage change graphs
Frequently asked questions
What is percentage change?
It measures the difference between a new value and an original value relative to the original value.
Can percentages be greater than 100%?
Yes. A result above 100% can be valid when the amount being measured is more than the reference amount.
KingToolsKit provides general-purpose tools and information. Check important results independently when they affect financial, legal, medical or other high-impact decisions.