Percentage Increase Calculator

Find how much a value increased, or add a percentage increase to any number.

Formula

To increase a value by a percentage, multiply by 1 plus the percentage as a decimal.

new value = original × (1 + increase%/100)

Short, practical answers for this calculation.

Subtract the old value from the new value, divide by the old value, then multiply by 100.

Multiply the number by 1.15.

Yes. A 100% increase doubles the original value.

No. A 50% increase from 100 gives 150; a 50% decrease from 150 gives 75.

Keep the topic tight: discounts, tax, VAT, markup, tips, grades, and percentage change.

All-in-one calculator for percent of a number, percent change, reverse percentages, increases, decreases, and conversions.

Calculate percentage increase or decrease from an old value to a new value.

Find the original value before a percentage increase, decrease, or percent-of relationship.

Calculate sale price, savings, and original price from discount percentages.

Add or remove sales tax and estimate before-tax and after-tax prices.

Add or remove VAT and calculate net price, gross price, and VAT amount.

Calculate markup percentage, selling price, cost, and gross profit.

Calculate profit margin, markup, revenue, cost, and profit.

Calculate tips, totals, and split bills quickly.