Percentage Increase Calculator
Calculate the percentage increase from one value to another. Works for salary raises, price increases, revenue growth, stock gains, and any percent change calculation. 100% private — runs in your browser.
How to Calculate Percentage Increase
Percentage increase measures how much a value has grown relative to its original amount. It is one of the most commonly used calculations in business, finance, education, and everyday life. Whether you are calculating a salary raise, price increase, revenue growth, investment returns, or population change, the formula is the same: subtract the original value from the new value, divide by the original value, and multiply by 100.
This calculator also works in reverse: if you know the original value and the percentage increase, it calculates the new value for you. This is useful for projecting future prices, salaries, or budgets based on a known growth rate.
Percentage Increase Formula
Percentage Increase = ((New Value − Original Value) / Original Value) × 100
New Value = Original Value × (1 + Percentage Increase / 100)
Original Value = New Value / (1 + Percentage Increase / 100)
Where:
- Original Value = The starting number (before the increase)
- New Value = The ending number (after the increase)
- A positive result means an increase; a negative result means a decrease
Example Calculations
Example 1: Salary Raise
Old salary: $50,000 → New salary: $55,000
- Increase = $55,000 − $50,000 = $5,000
- Percentage = ($5,000 / $50,000) × 100 = 10% increase
Example 2: Product Price Increase
Old price: $29.99 → New price: $34.99
- Increase = $34.99 − $29.99 = $5.00
- Percentage = ($5.00 / $29.99) × 100 = 16.67% increase
Example 3: Revenue Growth
Q1 revenue: $120,000 → Q2 revenue: $156,000
- Increase = $156,000 − $120,000 = $36,000
- Percentage = ($36,000 / $120,000) × 100 = 30% increase
Percentage Increase vs Percentage Points
It is important not to confuse percentage increase with percentage points. If an interest rate goes from 5% to 7%, that is a 2 percentage point increase, but a 40% percentage increase (because 2/5 = 0.40). This calculator computes the percentage increase (relative change), not the absolute difference in percentage points.
Common Percentage Increase Applications
Salary negotiations (what percentage raise did I get?), price comparison (how much more expensive is this?), business metrics (revenue growth rate, customer growth, MRR growth), academic performance (grade improvement), real estate (property value appreciation), inflation calculations, and investment returns all use percentage increase as a core metric.
Compound Percentage Increases
When percentage increases happen repeatedly (like annual salary raises or investment returns), they compound. A 10% increase followed by another 10% increase does not equal 20% total — it equals 21%, because the second increase applies to the already-increased amount. For compound calculations, use the formula: Final = Original × (1 + rate)^periods.