Percent Change Calculator
Calculate the percentage increase or decrease between two values.
Enter Your Numbers
Percent Change = ((New - Old) / Old) × 100
Percent Change Calculator Guide
Use this percent change calculator to quickly work out calculate the percentage increase or decrease between two values. Enter your numbers above and get instant results along with a year-by-year breakdown so you can see exactly how the numbers change over time.
The formula used is Percent Change = ((New - Old) / Old) × 100. Run a few different scenarios by changing one input at a time to see how each variable affects the outcome.
How to Use This Percent Change
Enter your values in the form above and click Calculate. The results section shows the most important numbers first. Below that, the year-by-year table lets you see how the balance changes over the full term. Change one field at a time to compare different scenarios side by side.
When to Use a Percent Change
This calculator is useful when you need to estimate calculate the percentage increase or decrease between two values. It works for both quick estimates and detailed planning. For best results, use realistic numbers based on your actual financial situation rather than optimistic guesses. Check the results table to understand the long-term trajectory, not just the final number.