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Percentage Calculator

Calculate percentages, changes and differences

Quick Conversions

What is X% of Y? to Percent Change What is X% of Y? to Percent Difference Percent Change to What is X% of Y? Percent Change to Percent Difference Percent Difference to What is X% of Y? Percent Difference to Percent Change

About Percentage Calculations

Percentages are used everywhere in daily life—from discounts and taxes to statistics and finance. Our calculator offers three modes: "What is X% of Y?" for basic calculations, "Percentage Change" for comparing old vs new values, and "Percentage Difference" for comparing any two values symmetrically.

Percentage change = ((New - Old) / Old) × 100. Percentage difference = (|A - B| / average) × 100.