Percentage Calculator
Calculate percentages, percentage differences, and percentage changes.
Basic Percentage Calculator
Fill in any two fields to calculate the third. For example: What is 25% of 80?
Percentage Difference Calculator
Calculate the percentage difference between two values.
Percentage Difference:
Percentage Change Calculator
Calculate the percentage increase or decrease from one value to another.
Percentage Change:
What is a Percentage?
A percentage is a number or ratio expressed as a fraction of 100. The word percentage comes from the Latin per centum, meaning "per hundred." Percentages are denoted using the % symbol.
Common Percentage Formulas
- Basic percentage: (Value / Total) × 100 = Percentage
- Percentage of a number: (Percentage / 100) × Total = Value
- Percentage difference: |Value1 - Value2| / ((Value1 + Value2) / 2) × 100
- Percentage change: ((New - Original) / Original) × 100
Tip: To convert a percentage to a decimal, divide by 100. To convert a decimal to a percentage, multiply by 100. For example, 45% as a decimal is 0.45, and 0.45 as a percentage is 45%.
Note: This calculator provides mathematical calculations for percentages based on the formulas described. Results are accurate to two decimal places. While we strive for accuracy, please verify important calculations independently. This tool is for educational and informational purposes and should not be the sole basis for financial, academic, or professional decisions.