Percentage Calculator

Three percentage calculators in one: find X% of Y, calculate what percent one number is of another, and find the percentage change between two values.

What is X% of Y?

% of =

What % is X of Y?

is what % of =

12.5%

Percentage Change

From

→

+25%

⚠ Disclaimer: Results are for informational and educational purposes only. Consult a qualified professional before making financial, medical, or construction decisions.

Understanding Percentages

The word "percent" means "per hundred." Percentages express a ratio out of 100, making it easy to compare proportions.

Key Formulas

X% of Y: Y × (X/100)
What % is X of Y: (X/Y) × 100
Percentage Change: ((New - Old) / |Old|) × 100

Real-World Examples

A 30% discount on a $80 item saves you $24, making the final price $56.
If a stock goes from $50 to $65, that is a 30% increase.
Scoring 45/60 on a test means you got 75%.

Percentage Calculator

What is X% of Y?

What % is X of Y?

Percentage Change

Understanding Percentages

Key Formulas

Real-World Examples

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Percentage Increase Calculator

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