Percentage Increase Calculator
Instantly find the percentage change between two numbers. Perfect for tracking grade improvements, price changes, or growth over time.
How It Works
Percent Change = ((New - Old) / |Old|) × 100Subtract the old value from the new value, divide the result by the absolute value of the old value, and multiply by 100. A positive result is an increase; a negative result is a decrease.
Quick Tips
Growth Tracking
Use this to see exactly how much your grades have improved since the midterm.
Sign Matters
If the resulting percentage is negative, it represents a percentage decrease rather than an increase.
Baseline
The "Old" value is always your baseline. Reversing Old and New will give a different percentage.
Absolute Limits
Going from 0 to any positive number is a 100% increase in this simplified calculation.
Step-by-Step Instructions
- 1Enter your original or starting value (Old Value).
- 2Enter your current or ending value (New Value).
- 3The calculator will instantly show the percentage difference and tell you if it is an increase or decrease.
Visualizing Percentage Increase
Percentage change measures the relative difference between an old value and a new value. It is essential for tracking growth, inflation, or academic improvement over time.
Increase Formula
New Value − Old Value
|Old Value|
Increase
If New > Old, the result is positive (+).
Decrease
If New < Old, the result is negative (−).
Frequently Asked Questions
What is the difference between percentage change and percentage difference?▼
Percentage change compares an old value to a new value over time. Percentage difference (using the other calculator) compares two different things at the same time against their average.
Can a percentage increase be more than 100%?▼
Yes! If a value more than doubles, the increase is greater than 100%. For example, going from 50 to 150 is a 200% increase.
Why is a 50% decrease followed by a 50% increase not the original number?▼
Because the baseline changes. A 50% decrease from 100 is 50. A 50% increase from 50 is 75, not 100. You would need a 100% increase to return to the original 100.