About Percentage
Percentage Calculator — a complete tool to calculate x% of y, find what percent one value is of another, and solve x% of what = z. Perfect for day-to-day math, finance, scores, shopping, and analytical comparisons.
What You Can Calculate
- x% of y = ? — multiply percent and base to get the result.
- ?% of y = z — find what percent a number (z) is of (y).
- x% of ? = z — compute the missing whole when result and percent are known.
Common Examples
- 20% of 150 → 30
- 20 is what percent of 80? → 25%
- 25% of what is 50? → 200
Tips for Accurate Percentage Calculations
- Percent means “per hundred” — convert by dividing/multiplying by 100.
- Decimals like 12.5% are fully supported.
- Ensure the base (whole) is not zero when finding a percentage.
FAQs
How does x% of y work?
Use the formula: (x / 100) × y.
How do I find what percent one number is of another?
Use: (Part ÷ Whole) × 100.
Can I calculate backwards?
Yes — use the “x% of what = z” mode to find the missing base.