How to Calculate Percentage Increase: Simple Formula Explained

What Is a Percentage Increase?

A percentage increase tells you how much a value grew relative to its original size. It is the standard way to describe price hikes, salary raises, rent increments, and business growth in India.

Percentage Increase = (New Value – Old Value) / Old Value × 100

For example, if your rent rises from ₹15,000 to ₹17,000, that is a 13.3% increase.

The Formula Step by Step

1. Subtract the old value from the new value → this is the growth amount.
2. Divide the growth amount by the old value.
3. Multiply by 100 to get the percentage.

₹17,000 − ₹15,000 = ₹2,000 → 2,000 / 15,000 = 0.133 → 13.3%.

Real-Life Uses in India

• Salary hikes — an annual increment from ₹30,000 to ₹34,500 is a 15% raise.
• Rent and property — comparing a ₹22,000 asking rent vs your old ₹20,000.
• EMI and rate changes — understanding how much your monthly outgo grew after a rate reset.
• Business pricing — tracking how your cost of raw materials increased over a year.
• Trading and investments — measuring a stock's rise from ₹100 to ₹145.

How to Use the Online Calculator

You never need to remember the formula. On the percentage calculator page:

1. Choose percentage increase mode.
2. Enter the old value and the new value.
3. The tool shows the increase in percentage immediately.

You can also flip it — entering the old value and the increase % gives you the new value directly.

Increase vs Difference: Don't Confuse Them

• Percentage increase compares growth to the starting value.
• Percentage difference compares two values symmetrically.

A rise from 8% to 10% interest is 2 percentage points but a 25% increase — the media often mixes these up, so do the math before reacting to a headline.

Frequently Asked Questions

• Can I reverse it? Yes — given the old value and increase %, the calculator returns the new value.
• Does it handle GST and discounts? Yes, the same tool covers percentage-based billing; combine it with the GST calculator and discount calculator.
• Is it free? Yes, the percentage calculator is 100% free.

Stop second-guessing salary and price numbers — calculate increases instantly with the percentage calculator.