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 Percentage Increase Calculator Works
Calculate the percentage increase from one number to another. Find percent change, growth rate, or markup instantly. percentage increase calculator. Enter your values into the form above and the calculator processes them instantly in your browser — no data is sent to any server.
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.
Frequently Asked Questions
How do I calculate percentage increase?
Subtract the original value from the new value, divide by the original value, and multiply by 100. For example: (55,000 - 50,000) / 50,000 × 100 = 10% increase.
What if the result is negative?
A negative result means the value decreased rather than increased. For example, going from 100 to 80 gives -20%, which means a 20% decrease.
How is percentage increase different from percentage points?
Percentage increase is relative change. Percentage points is absolute difference. If a rate goes from 5% to 7%, that is 2 percentage points but a 40% increase (2/5 = 0.40).
Can I use this for salary raise calculations?
Yes. Enter your old salary as the original value and new salary as the new value. The calculator tells you the exact percentage raise. Or enter your old salary and the raise percentage to find your new salary.
How do I calculate reverse percentage (find original price before increase)?
Switch to "Find original value" mode, enter the new value and the percentage increase. The calculator divides the new value by (1 + percentage/100) to find the original.
Does this handle compound percentages?
This calculator handles a single percentage change. For compound increases (like annual growth over multiple years), use the formula: Final = Original × (1 + rate)^years.