Percent Decrease Calculator
Calculate the percentage decrease between two numbers — price drops, weight loss, or any fall in value — free online. — free, fast and private.
Your result will appear here.
How to use Percent Decrease Calculator
- Enter the original value.
- Enter the new, lower value.
- Click Calculate Decrease to see the percentage drop.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What is the formula for percent decrease?
Percent decrease = (original value − new value) ÷ original value × 100. For example, a price falling from 200 to 150 is (200 − 150) ÷ 200 × 100 = 25% decrease.
Is this tool free to use?
Yes, it is 100% free with no sign-up. Your data stays in your browser.
Is my data uploaded or stored?
No. This tool runs entirely in your browser — nothing you enter is uploaded to a server.
Can I use it on my phone?
Yes, it is fully mobile-friendly and works in any modern browser on phone, tablet or computer.