Percentage Calculator: The Ultimate Math Tool

Percentages are everywhere—from shopping discounts and exam marks to tax calculations and stock market changes. While the basic concept is simple, calculating complex variations like “Percentage Increase” or “Reverse Percentage” can be confusing.

Calculator Aangan’s Premium Percentage Calculator is a 4-in-1 tool designed to solve every type of percentage problem instantly.

4 Modes Explained

1. Simple Percentage Calculator

This is the most common use case.

Formula: $(P / 100) \times Y$

Example: What is 20% of 5000?

Result: $(20/100) \times 5000 = 1000$.

2. “What Percentage Is” Calculator

Used when you want to know the ratio of a part to a whole.

Formula: $(A / B) \times 100$

Example: 50 is what % of 200?

Result: $(50/200) \times 100 = 25\%$.

3. Percentage Increase / Decrease Calculator

Essential for calculating profit/loss, salary hikes, or price drops.

Formula: $\frac{\text{New Value} – \text{Old Value}}{\text{Old Value}} \times 100$

Example: Price went from ₹100 to ₹150.

Change: $ \frac{150 – 100}{100} \times 100 = 50% \text{ Increase}$.

4. Percentage Difference Calculator

Used when comparing two values where neither is the “start” value (e.g., comparing heights of two buildings).

Formula: $\frac{|V1 – V2|}{(V1 + V2)/2} \times 100$

Real-Life Examples

• Shopping: A shirt costs ₹2000 and has a 30% discount. How much do you save? (Use Mode 1).
• Exams: You scored 450 out of 600. What is your percentage? (Use Mode 2).
• Salary: Your salary increased from ₹50,000 to ₹60,000. What is the hike %? (Use Mode 3).

Frequently Asked Questions (FAQ)

1. How to calculate percentage on a calculator?

If you are using a standard physical calculator: Enter the number, press multiply (x), enter the percentage rate, and press the percent (%) key.

2. Can percentage be negative?

A percentage itself is a ratio, so it’s usually positive. However, “Percentage Change” can be negative, which indicates a decrease or loss.

3. What is the difference between % Change and % Difference?

• % Change is used when there is an Old value and a New value (Timeline based).
• % Difference is used when comparing two separate things (e.g., comparing the price of Apple vs Samsung).

Solve math in seconds. Use Calculator Aangan for error-free calculations.

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