### How to Calculate Percentages
To calculate a percentage, use the formula: **(Part / Whole) × 100**. For example, to find what percentage 20 is of 80, calculate (20 / 80) × 100 = 25%.
Our Percentage Calculator handles three main modes:
1. **X% of Y:** Find the value of a percentage (e.g., 20% of $150 = $30).
2. **X is what % of Y:** Find the proportion (e.g., $30 is 20% of $150).
3. **Percent Change:** Find the increase or decrease between two numbers (e.g., $100 to $120 is a 20% increase).
Frequently Asked Questions
How do I find a percentage of a number?
Multiply the number by the percentage and divide by 100. (Num * Percent) / 100.