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Percentage Change Calculator Guide

Use this tool to measure how much a value has moved from an original number to a current number. It’s useful for prices, KPIs, and stock quotes, and it works for both gains and losses. The percentage is shown with 3 decimal places using standard rounding, and the absolute change is also provided for quick verification.

This calculator can be used as a simple “increase calculator” or “decrease calculator”: enter the original value and the current value to get both the absolute change and the percentage change.

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Common Scenarios

• Stocks: calculate price increase/decrease between two closes.
• Funds: compare NAV changes across dates.
• Crypto: compute gains/losses from entry to current price.
• Pricing: evaluate quote/cost changes over time.
• KPIs: track growth for revenue, traffic, conversion rate, etc.

Tips

• Example: 10.1457% is displayed as 10.146% (rounded to 3 decimals).
• The result section repeats the original and current values so you can avoid mixing up multiple calculations.

Formula

percentage change = (current - original) / original

Example

If yesterday’s close was 100 and today’s close is 110, then:

(110 - 100) / 100 = 10%