How do I calculate a percentage increase between two numbers?

To calculate percentage increase:

1. Subtract the original number from the new number to find the difference.
2. Divide that difference by the original number.
3. Multiply the result by 100.

For example, if a price goes from $50 to $75: ($75 - $50) ÷ $50 = 0.5, which is a 50% increase. Our Percentage Increase Calculator automates this to show you exactly how much a value has grown.