Percentage Increase Calculator
Percentage Increase Calculator
Calculate percentage increase, decrease, percent change, percent difference, percentage of a number, and reverse percentage values. Useful for prices, salary changes, grades, business growth, finance, discounts, analytics, and everyday math.
Percentage increase is calculated as: new value minus old value, divided by old value, multiplied by 100. For example, if a value increases from 100 to 125, the increase is 25%.
Calculate percentage change
Calculation details
Your percentage result and formula will appear here.
This calculator is for general math and estimate purposes. For taxes, payroll, loans, investments, or legal calculations, confirm the formula required for your specific situation.
What is a percentage increase calculator?
A percentage increase calculator shows how much a value has grown compared with its original value. It is commonly used for price changes, salary raises, sales growth, traffic growth, grades, revenue, analytics, and business reports.
For example, if a value changes from 100 to 125, the increase is 25 because the value grew by 25 out of the original 100. The percentage increase is 25%.
Percentage increase formula
The standard percentage increase formula is:
- Percentage increase = ((new value - old value) / old value) × 100
- Old value: 100
- New value: 125
- Increase: 25
- Percentage increase: 25%
Common use cases
- Calculate price increase or price decrease.
- Check salary raise percentage.
- Measure revenue, profit, or sales growth.
- Calculate website traffic growth or analytics change.
- Find percentage change in grades, scores, or performance.
- Calculate discounts, markups, and business changes.
Percentage increase vs percentage difference
Percentage increase compares the change to the original value. Percentage difference compares two values using their average as the base. Use percentage increase when you have a clear old value and new value.
Use percentage difference when comparing two values without treating one as the starting point.
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FAQ
How do you calculate percentage increase?
Subtract the old value from the new value, divide the result by the old value, and multiply by 100.
What is the percentage increase from 100 to 125?
The increase is 25. Divide 25 by 100 and multiply by 100. The percentage increase is 25%.
How do you calculate percentage decrease?
Subtract the new value from the old value, divide by the old value, and multiply by 100. This gives the percentage decrease.
What is the difference between percent change and percent difference?
Percent change uses the original value as the base. Percent difference uses the average of two values as the base.
Can I calculate discounts with this tool?
Yes. Use the “Add or Subtract %” tab and choose decrease by percentage to calculate discounts.
Does this calculator store my numbers?
No. This calculator runs in your browser and does not upload or store your values on WordPress or Hostinger.
Need more calculators and free tools?
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