How do you calculate percentage manually?

To calculate percentage manually, divide the part by the whole and multiply the result by 100. Example: 25/200 × 100 = 12.5%.

How to calculate percentage increase?

Percentage increase = ((New − Old) / Old) × 100. Example: price went from Rs.100 to Rs.120, increase = (20/100) × 100 = 20%.

How to find what percent one number is of another?

Divide the first number by the second and multiply by 100. Example: 30 is what % of 150? Answer: (30/150) × 100 = 20%.

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💹 Percentage Calculator

Calculate percentage of a value, percentage increase/decrease, and difference between two values.

1. What is X% of Y?

X (%)

Y (Value)

Result: —

2. X is what % of Y?

X (Value)

Y (Total)

Result: —

3. Percentage Increase / Decrease

Old Value

New Value

Result: —

💡 Percentages are used everywhere — discounts, GST, salary hikes, investments, exam marks.

🎯 Calculate percentages for: Exam marks percentage calculator · CBSE percentage calculator · 10th 12th board marks percentage · Salary hike percentage calculator · Discount percentage calculator · GST percentage calculator · Profit percentage calculator · Loss percentage calculator · Percentage increase in rent · Weight loss percentage calculator · Blood test normal percentage values

What is Percentage?

A percentage is a way of expressing a number as a fraction of 100. The word comes from the Latin per centum, meaning "by the hundred." Percentages are used everywhere in daily life — discounts, exam marks, bank interest rates, tax rates, and statistics all use percentage as a standard way to compare numbers on a common scale.

3 Types of Percentage Calculations

Type 1: What is X% of Y? → Answer = Y × X ÷ 100
Type 2: X is what % of Y? → Answer = (X ÷ Y) × 100
Type 3: % Change from X to Y → Answer = ((Y − X) ÷ X) × 100

Examples

Type 1: What is 15% of ₹2,500? → 2500 × 15 ÷ 100 = ₹375
Type 2: 45 is what % of 180? → (45 ÷ 180) × 100 = 25%
Type 3: Price went from ₹800 to ₹960. % increase? → ((960−800) ÷ 800) × 100 = 20% increase

Real-World Uses of Percentage

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Shopping Discounts

A "40% off" tag on a ₹3,000 item means you save ₹1,200 (= 3000 × 40 ÷ 100) and pay ₹1,800. Always calculate the actual saving before assuming a deal is great.

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Exam Marks

Scored 387 out of 500? Your percentage = (387 ÷ 500) × 100 = 77.4%. Many competitive exams have minimum percentage cutoffs for eligibility.

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Stock Returns

Bought shares at ₹240, now at ₹312. Return% = ((312−240) ÷ 240) × 100 = 30% gain. Use % to compare returns across different investment amounts.

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Bank Interest

A 6.5% FD on ₹1 lakh earns ₹6,500 per year. A 0.5% difference in rate seems small but on ₹10 lakhs over 5 years equals ₹25,000+ in lost interest.

Percentage Increase vs Percentage Points

These are commonly confused. If interest rate rises from 6% to 8%, it increased by 2 percentage points but by 33.3% (=(2÷6)×100). Banks and media often use "percentage points" to make changes sound smaller. Always clarify which is being used when reading financial news.