Calculate percentages, increases, decreases, and more
Five different percentage calculators in one tool for all your percentage needs
Calculate percentage increases and decreases for prices, salaries, and more
Find what percentage one number represents of another instantly
Calculate the percentage difference between old and new values
Get instant percentage calculations as you type with no delays
Perfect for discounts, tax calculations, profit margins, and financial analysis
To calculate a percentage, divide the part by the whole and multiply by 100. For example, to find what percentage 25 is of 100: (25 ÷ 100) × 100 = 25%. Our calculator does this automatically for you.
To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New - Old) ÷ Old) × 100. For example, if a price increases from $100 to $120, the increase is ((120-100)÷100)×100 = 20%.
Percentage decrease is calculated the same way as increase: ((Old - New) ÷ Old) × 100. If a price drops from $100 to $80, the decrease is ((100-80)÷100)×100 = 20%. The decrease calculator automatically handles this for you.
Divide X by Y and multiply by 100. For example, to find what percent 30 is of 150: (30 ÷ 150) × 100 = 20%. This is useful for calculating test scores, completion rates, and proportions.
To calculate sales tax, multiply the price by the tax rate percentage. For example, with a 7% tax rate on a $100 item: $100 × 0.07 = $7 tax. Use the "What is X% of Y" calculator with 7 as X and 100 as Y to get the tax amount.
For a discount, use the percentage decrease calculator. Enter the original price and the discount percentage to see the final price. For example, a 20% discount on $100 gives you $80. Alternatively, use "What is X% of Y" to find the discount amount, then subtract from the original price.
Yes! Use the "What is X% of Y" calculator. Enter the tip percentage (like 15, 18, or 20) and your bill amount to calculate the tip. For example, 18% tip on a $50 bill: enter 18 as X and 50 as Y to get $9 tip amount.
Percentage change is relative to the original value, while percentage point change is absolute. If interest rates go from 5% to 8%, that's a 3 percentage point increase, but a 60% percentage change ((8-5)÷5×100 = 60%). Use the percentage change calculator for relative changes.