1. What is a Percentage Calculator?

Definition: This calculator computes the percentage that one value (part) represents of another value (whole).

Purpose: It helps in various mathematical, financial, and statistical calculations where relative proportions need to be determined.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The formula calculates what portion the part is of the whole, then converts it to a percentage by multiplying by 100.

3. Importance of Percentage Calculation

Details: Percentage calculations are fundamental in statistics, finance, science, and everyday life for comparing proportions, analyzing data, and making decisions.

4. Using the Calculator

Tips: Enter the part and whole values (both must be positive numbers, and whole cannot be zero). The result will be shown as a percentage.

5. Frequently Asked Questions (FAQ)

Q1: What if my part is larger than the whole?
A: The calculator will still work, showing a percentage greater than 100%, indicating the part exceeds the whole.

Q2: Can I calculate percentage decrease?
A: Yes, use the difference between original and new value as the "part" and original value as the "whole".

Q3: What's the difference between percentage and percentile?
A: Percentage is a proportion out of 100, while percentile indicates a value below which a certain percentage of data falls.

Q4: How do I convert a percentage back to a decimal?
A: Divide the percentage by 100 (e.g., 25% = 0.25).

Q5: What if I get "NaN" or unexpected results?
A: Ensure you've entered valid numbers and that the whole value isn't zero.