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Free Percentage Change Calculator Online
Free Percentage Change Calculator Online is a free online tool by US AI. Increase / decrease percent. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Enter the old and new values and press Calculate to see the percentage change, increase or decrease label, and difference.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free percentage change calculator online is fast, private and 100% free forever. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
How do I calculate percent change?
Subtract the old value from the new value, divide by the old value, and multiply by 100. A positive result is an increase; negative is a decrease.
What is the difference between percent change and percentage points?
Going from 20% to 25% is a 5 percentage-point rise but a 25% percent change — percentage points measure the raw gap, percent change measures the relative growth.
Can percent change be more than 100%?
Yes. If a value doubles, the percent change is 100%; if it triples, it is 200%.