How is percentage increase/decrease calculated?

Percentage change = ((New Value - Old Value) / |Old Value|) × 100. A positive result denotes an increase; negative denotes a decrease.

Can I calculate negative percentages or decimal percentages?

Yes. The calculator fully supports decimal fractions and negative numbers.

Does this calculator show the mathematical formula used?

Yes. Every calculation displays the exact mathematical formula and step-by-step reduction below the result.

How is percentage increase/decrease calculated?

Percentage change = ((New Value - Old Value) / |Old Value|) × 100. A positive result denotes an increase; negative denotes a decrease.

Can I calculate negative percentages or decimal percentages?

Yes. The calculator fully supports decimal fractions and negative numbers.

Does this calculator show the mathematical formula used?

Yes. Every calculation displays the exact mathematical formula and step-by-step reduction below the result.

Free 4-in-1 Percentage Calculator

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Quickly solve everyday percentage calculations: find percentages of numbers, calculate percentage increases or decreases, and reverse-calculate totals with step-by-step formulas.

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