Showing results for Illinois (IL)
Calculators/Everyday
Percentage Calculator
Three percentage calculators in one: find X% of Y, calculate what percentage one number is of another, or compute percentage change between two values.
%
15% of 200
30
How to Use This Calculator
1
Mode "X% of Y" — find a percentage of a number
Use this when you want to know what 15% of $200 is (answer: $30). Enter the percentage and the base number.
2
Mode "X is what % of Y" — find the percentage
Use this when you have two numbers and want to know the ratio. For example: 30 is what percent of 200? (answer: 15%).
3
Mode "% Change" — find increase or decrease
Use this to calculate price changes, growth rates, or discounts. From $80 to $100 is a 25% increase. A negative result means a decrease.
Real-World Examples
Sales Tax
Mode
X% of Y
X
8.25%
Y
$450
Result$37.13 tax
Total with tax: $487.13. Use this mode for tip, discount, or tax amounts.
Stock Price Change
Mode
% Change
From
$142.50
To
$178.25
Result+25.09% gain
A $35.75 gain on the original $142.50 position equals a 25.09% return.
Frequently Asked Questions
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