Utility

Percentage Calculator

Q: What percentage calculations are supported?

Four modes: X% of Y, what percent X is of Y, percentage change between two values, and increase/decrease a value by a percentage.

Q: How precise are the results?

All results are rounded to 2 decimal places for practical accuracy.

Q: Can I calculate negative percentages?

Yes. Percentage change can be negative (decrease), and you can decrease a value by any percentage.

Q: Is this tool free to use?

Yes, completely free. All calculations happen in your browser session.

Calculate percentages instantly. Find X% of Y, determine what percent one number is of another, compute percentage change, and adjust values up or down.

functions What is X% of Y?

Percentage (%)

Of Value

help X is what % of Y?

Part (X)

Whole (Y)

trending_up Percentage Change

From

tune Adjust Value by %

Value

Percentage (%)

help Frequently Asked Questions

info

How to use

Choose a calculation mode, enter your values, and click Calculate.

All results are rounded to 2 decimal places.

check_circle What is X% of Y
check_circle X is what % of Y
check_circle Percentage change & adjust by %

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