Calculate the percentage increase or decrease between any two values. Find out by how much a price, salary, investment, or any number has changed — and what the new value is after applying a percentage change.
Used for salary raises, price changes, investment returns, inflation calculations, and comparing any two numbers.
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How to Calculate Percentage Increase
Percentage increase shows how much a value has grown relative to its original amount. A negative result indicates a percentage decrease.
Salary raise: calculate what percentage increase your new offer represents. Price changes: how much did a product go up or down in price? Investment returns: what percentage did your portfolio grow? Inflation: how much has the cost of living increased? Population growth: by what percentage did a city grow?
Percentage increase vs percentage points
These are often confused. If an interest rate goes from 2% to 4%, it increased by 2 percentage points — but by 100% as a relative change. "Percentage increase" always refers to the relative change from the original value.
Frequently Asked Questions
How do I calculate percentage increase?
Use the formula: ((New Value − Old Value) ÷ Old Value) × 100. A positive result is an increase; negative is a decrease. Example: price went from $80 to $100: ((100−80)÷80)×100 = 25% increase.
What is the difference between percentage increase and percentage points?
Percentage increase is relative to the original value. Percentage points is the arithmetic difference. If something goes from 20% to 25%, it increased by 5 percentage points, but by 25% as a relative percentage increase.
How do I calculate a salary raise percentage?
Subtract your old salary from your new salary, divide by your old salary, and multiply by 100. Example: old salary $50,000, new salary $53,000: ((53,000−50,000)÷50,000)×100 = 6% raise.
Can percentage increase be more than 100%?
Yes. If something doubles in value, that's a 100% increase. If it triples, that's a 200% increase. There's no upper limit on percentage increase, though percentage decrease is capped at 100% (you can't lose more than 100% of a value).