Percentage Calculator | % Increase, Decrease, & more

Free online percentage calculator. Calculate percentage increase or decrease, find X% of Y, and copy Excel & Google Sheets formulas.

What is X% of Y? X is what percent of Y? Percentage change between Old and New

Result will appear here.

Tip: results update as you type.

More fast tools for money, work, and everyday maths.

Weekly, fortnightly, or monthly repayments; see interest saved with extra payments.

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Use (New − Old) ÷ Old × 100.

For a single period, yes. Over multiple periods use compound growth (CAGR).

Divide the new value by (1 + increase%).