Percentage Calculator
प्रतिशत क्याल्कुलेटर
Solve percentage problems: increase, decrease, of, and change.
A quick percentage toolkit: find a percentage of a value, work out what percent one number is of another, measure percentage change, and increase or decrease a value by a given percent.
About the percentage calculator
Percentages turn up everywhere — discounts, marks, interest, tax rates, profit margins — yet the four common questions they raise each need a different formula, and mixing them up is an easy mistake. This tool bundles all four in one place: find a percentage of a value, work out what percent one number is of another, measure percentage change between two values, and increase or decrease a value by a given percent.
The four calculations
"What is X% of Y?" multiplies the value by the percentage and divides by 100. "X is what percent of Y?" divides the part by the whole and multiplies by 100. Percentage change compares a new value with its old value. Increasing or decreasing a value by a percent adds or subtracts that share of the original amount.
Percentage change vs percentage points
Percentage change compares a value with its previous value — going from 200 to 250 is a 25% increase. Percentage points compare two percentages directly, so a rate moving from 13% to 15% has risen by two percentage points (about 15.4% in relative terms). Keeping the two apart avoids a very common reporting error.
Results appear as you type and everything runs in your browser.