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Percentage Calculator
Solve common percentage questions, compare values, and calculate increases or decreases instantly.
Privacy: Calculations and drafts stay on this device unless you explicitly enable account sync.
Percentage inputs
Switch between a percentage of a value, ratio percentage, and percentage change.
Percentage result
15% of 200
30
What this tool does
Calculate a percentage of a value, a ratio or percentage change.
How to use it
Select the question type before entering the two numbers.
Worked example
20% of 150 is 30. Increasing 100 to 125 is a 25% change.
Limitations and checks
Percentage change from zero is undefined. Percentage points and relative percent changes are different quantities.
How your data is processed
The operation runs in your browser. Copy and download actions use your device. Where Save work is offered, a local copy is stored; eligible work can sync only under your enabled account settings. See Privacy for site analytics and storage details.
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