Percentage Increase Calculator – Find the % Change Between Two Values
The percentage increase calculator helps you quickly determine how much a value has grown or changed between two points in time. Whether you're tracking price changes, salary raises, sales growth, or population shifts, this tool gives you an instant, accurate percentage change. Simply enter the original and new values to see the percentage increase, absolute difference, and growth multiple.
Enter the starting or original number before the change.
Enter the new or final number after the change.
Your results will appear here
How to Use This Calculator
1. Enter the Original Value – type the starting number (e.g., last month's revenue or the old price) into the 'Original Value' field. 2. Enter the New Value – type the updated or final number (e.g., this month's revenue or the new price) into the 'New Value' field. 3. View Your Results – the calculator instantly displays the percentage increase (or decrease), the absolute difference between the two values, whether the change is an increase or decrease, and the new value as a multiple of the original. 4. Adjust as Needed – change either input at any time to recalculate instantly.
How Is Percentage Increase Calculated?
The percentage increase formula measures the relative change between an original value and a new value. It expresses the change as a proportion of the original value, multiplied by 100 to convert it to a percentage.
The Formula
Percentage Increase = ((New Value − Original Value) / |Original Value|) × 100
If the result is positive, the value has increased. If the result is negative, the value has decreased (a percentage decrease). If the result is zero, there is no change.
Step-by-Step Example
Suppose a product's price increased from $200 to $250:
- Absolute Difference: $250 − $200 = $50
- Divide by the Original: $50 ÷ $200 = 0.25
- Multiply by 100: 0.25 × 100 = 25% increase
Understanding Absolute Difference
The absolute difference is simply the raw numerical change between the two values (New Value minus Original Value). It tells you the actual amount of change without any context relative to the starting point.
Understanding the Growth Multiple
The growth multiple (or multiplier) tells you what fraction or multiple the new value is of the original. A multiple of 1.25 means the new value is 1.25 times the original — a 25% increase. A multiple of 0.80 means the value is 80% of the original — a 20% decrease.
Common Use Cases
- Finance & Investing: Calculate stock price growth, portfolio returns, or revenue growth.
- Retail & E-commerce: Measure price changes, discount effectiveness, or sales uplift.
- Salary & HR: Determine raise percentages or compare compensation packages.
- Health & Fitness: Track weight changes, fitness improvements, or test score growth.
- Science & Statistics: Analyze data changes over time in experiments or surveys.
Percentage Increase vs. Percentage Decrease
The same formula works for both increases and decreases. When the new value is greater than the original, the result is a positive percentage (increase). When the new value is less than the original, the result is a negative percentage (decrease). Our calculator automatically labels the result as an increase or decrease for clarity.