How do I calculate percentage?

Percentage = (Part / Whole) × 100. For 25 out of 50: (25/50) × 100 = 50%.

How do I calculate percentage increase?

Increase % = ((New - Old) / Old) × 100. From 80 to 100: ((100-80)/80) × 100 = 25% increase.

How do I find the original price before a discount?

Original = Sale Price / (1 - Discount%). If 20% off and sale price is $80: $80 / 0.8 = $100 original.

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Percentage Calculator

Calculate percentages, increases, decreases, and 'what % of'

Calculation Type

Value

Total

About Percentage Calculator

What is Percentage Calculator?

Calculate percentages for any situation: find X% of Y, determine what percentage X is of Y, calculate percentage increase/decrease between two values, and more.

Features & Benefits

Multiple calculation modes
Percentage of a number
Percentage change calculator
Reverse percentage
Clear step-by-step results
Works with decimals

Frequently Asked Questions

How do I calculate percentage?: Percentage = (Part / Whole) × 100. For 25 out of 50: (25/50) × 100 = 50%.
How do I calculate percentage increase?: Increase % = ((New - Old) / Old) × 100. From 80 to 100: ((100-80)/80) × 100 = 25% increase.
How do I find the original price before a discount?: Original = Sale Price / (1 - Discount%). If 20% off and sale price is $80: $80 / 0.8 = $100 original.

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How-To Guides

How to Calculate Percentage

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