1. What is a Percentage Calculator?

Definition: This calculator computes the percentage that one number represents of another number.

Purpose: It helps users quickly determine percentages for various applications including finance, statistics, and everyday calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Percentage — The result expressed as a percentage
• Part — The portion of the whole you're measuring
• Whole — The total or reference amount

Explanation: The part is divided by the whole to get a decimal value, which is then multiplied by 100 to convert it to a percentage.

3. Importance of Percentage Calculations

Details: Percentage calculations are fundamental in finance (interest rates), retail (discounts), statistics (data analysis), and many other fields.

4. Using the Calculator

Tips: Enter the part and whole values (both unitless numbers). The whole must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What if my whole is zero?
A: Division by zero is undefined. The whole must be a positive number.

Q2: Can I calculate percentage increase/decrease?
A: Yes, use (New Value - Original Value)/Original Value × 100. For decrease, the result will be negative.

Q3: How precise are the results?
A: Results are shown to 2 decimal places for most practical purposes.

Q4: Can I use this for financial percentages?
A: Yes, this calculator works for any percentage calculation where you have a part and whole.

Q5: Why multiply by 100?
A: Multiplying by 100 converts the decimal fraction to a percentage (literally "per hundred").