PercentCalc

Percentage Calculator

Instant percentage calculations — no fuss, no page reload

What is X% of Y?

% of
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Formula: Result = (X ÷ 100) × Y

What percent is X of Y?

is what % of
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Formula: % = (X ÷ Y) × 100

Percentage Increase / Decrease

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Formula: % Change = ((To − From) ÷ |From|) × 100

Tip: Tax Calculation
Use "X% of Y" to calculate 18% GST on ₹5,000 = ₹900
Tip: Discounts
Find 20% off ₹1,200 — enter 20 and 1200 → ₹240 savings
Tip: Grade Scores
Got 72 out of 90? Use "What %" → 80%

Percentage Calculator

How to Calculate Percentages

Our percentage calculator makes it easy to perform three common percentage calculations instantly. Whether you need to find what percentage one number is of another, calculate a specific percentage of a number, or determine the percentage change between two values, this tool handles it all without any manual math.

The first tab helps you calculate "X% of Y" – perfect for finding discounts, tax amounts, or tips. For example, if you want to know what 18% GST on ₹5,000 is, simply enter 18 and 5000 to get ₹900. The second tab answers "What percent is X of Y?" which is useful for calculating grades, completion rates, or comparing values. The third tab calculates percentage increase or decrease, ideal for tracking price changes, salary hikes, or investment returns.

Percentages are used everywhere in daily life – from shopping discounts and loan interest rates to exam scores and business analytics. Our calculator eliminates the need for manual formulas and provides instant, accurate results as you type. Each calculation shows the formula used, helping you understand the math behind the result.