Simple and efficient tools for your percentage calculations
Calculate what value a percentage represents of a given number.
Formula: Result = (Percentage × Number) ÷ 100
What is 20% of 500?
Result = (20 × 500) ÷ 100 = 100
What is 75% of 200?
Result = (75 × 200) ÷ 100 = 150
Calculate what percentage one number is of another number.
Formula: Percentage = (Number1 ÷ Number2) × 100
What percentage is 25 of 200?
Percentage = (25 ÷ 200) × 100 = 12.5%
What percentage is 150 of 600?
Percentage = (150 ÷ 600) × 100 = 25%
Find out the new value after applying a percentage increase or decrease.
Formula for Increase: New Value = Original Value × (1 + Percentage ÷ 100)
Formula for Decrease: New Value = Original Value × (1 - Percentage ÷ 100)
A product costs $100 and has a 20% increase. What is the new price?
New Price = $100 × (1 + 20 ÷ 100) = $100 × 1.2 = $120
A $50 item has a 15% discount. What is the sale price?
Sale Price = $50 × (1 - 15 ÷ 100) = $50 × 0.85 = $42.50
Determine the percentage change between an initial value and a final value.
Formula: Percentage Variation = ((Final Value - Initial Value) ÷ Initial Value) × 100
A price increases from $100 to $120. What is the percentage increase?
Percentage Variation = ((120 - 100) ÷ 100) × 100 = 20%
A stock value falls from $50 to $40. What is the percentage decrease?
Percentage Variation = ((40 - 50) ÷ 50) × 100 = -20%