📊 Percentage Calculator
Marks se percentage, discount aur increase/decrease — sab instant.
Last updated: 7 Oct 2026 · Calculation based on publicly known formulas. This is an estimate — actual values may vary.
Result
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This is an estimate. Actual values may vary.
How we calculated it
This tool covers the three percentage questions people ask most:
- X% of Y — (X ÷ 100) × Y. Example: 20% of 250 = 50. Use it for discounts, tips and tax amounts.
- X is what % of Y — (X ÷ Y) × 100. Example: 45 is 25% of 180. Use it for marks, vote shares and completion rates.
- % change from X to Y — (Y − X) ÷ X × 100, with a +/− sign and increase/decrease label. Example: 120 → 150 is +25%; 200 → 150 is −25%. Use it for salary hikes, price changes and growth rates.
Every answer shows the exact formula with your numbers plugged in, so you can verify it in one glance — no black box.
Related searches: percentage calculator, how to calculate percentage, percent increase calculator, percent decrease formula, what percent is X of Y, discount calculator.
Last updated: 7 Oct 2026. Calculation based on standard percentage arithmetic, rounded to 2 decimals. This is an estimate. Actual values may vary.
This is an estimate. Actual values may vary. For official figures, always check the relevant authority or official notification.
Frequently asked questions
How do I calculate X% of Y?
Divide X by 100 and multiply by Y. For 20% of 250: (20 ÷ 100) × 250 = 50. Select the first mode above and it does this instantly.
How do I find what percentage one number is of another?
Divide the first number by the second and multiply by 100. For “45 is what % of 180”: (45 ÷ 180) × 100 = 25%.
What is the formula for percentage increase or decrease?
(New − Old) ÷ Old × 100. A positive answer is an increase, negative is a decrease. From 120 to 150: (150 − 120) ÷ 120 × 100 = +25%.
What is the difference between percentage points and percent?
If something rises from 20% to 25%, that's a 5 percentage-point rise but a 25% relative increase (5 ÷ 20 × 100). Mixing these up is the most common percentage mistake.
Why does a 50% drop need a 100% rise to recover?
Percentages are relative to different bases. Losing 50% of 100 leaves 50; gaining 50% of 50 only reaches 75. To get back to 100 you need +100% of 50. That's why the % change formula always divides by the starting value.