Percentage Calculator
Your free online Percentage Calculator - making math simple in just a few clicks.
Percentage Calculator FAQ
What is a Percentage Calculator?
A Percentage Calculator is a specialized tool that simplifies various percentage-based calculations. Our Percentage Calculator helps you find what percentage one number is of another, calculate a specific percentage of a value, and determine the percentage increase or decrease between two numbers without having to remember complex formulas.
How do I use this Percentage Calculator to find what percentage one number is of another?
To find what percentage A is of B using our Percentage Calculator, enter value A in the first field and value B in the second field, then click "Calculate". The Percentage Calculator automatically divides A by B and multiplies by 100. For example, to find what percentage 25 is of 100, the Percentage Calculator performs: (25 ÷ 100) × 100 = 25%.
How can I calculate a percentage of a number with this Percentage Calculator?
Using our Percentage Calculator, enter the percentage in the first field and the number in the second field, then click "Calculate". The Percentage Calculator multiplies the number by the percentage/100. For example, to find 25% of 200, the Percentage Calculator performs: 200 × (25 ÷ 100) = 200 × 0.25 = 50.
How does this Percentage Calculator determine percentage increase or decrease?
Our Percentage Calculator computes percentage change from value A to value B using the formula: ((B - A) ÷ A) × 100. The Percentage Calculator displays a positive result for an increase and a negative result for a decrease, with clear indicators showing which type of change occurred.
Why does the Percentage Calculator show an error when I enter zero in certain fields?
Division by zero is mathematically undefined. When using the Percentage Calculator for operations that involve division (like finding what percentage one number is of another or calculating percentage change), the denominator (the number you're dividing by) cannot be zero.
Can I use this Percentage Calculator for financial calculations?
Yes, our Percentage Calculator is ideal for basic financial calculations like calculating discounts, tax amounts, or interest rates. The Percentage Calculator provides accurate results for all percentage-based financial scenarios. For more complex financial calculations, consider using specialized financial tools.
