Question 1

How do I calculate a percentage of a number?

Accepted Answer

Multiply the number by the percentage divided by 100. For example, 20% of 500 = (20 / 100) × 500 = 100. Use Mode 1 (X% of Y) for this calculation.

Question 2

How do I calculate percentage change?

Accepted Answer

Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result is an increase, a negative result is a decrease. Use Mode 3 (Percentage change).

Question 3

How do I find what percent one number is of another?

Accepted Answer

Divide the part by the whole, then multiply by 100. For example, 30 out of 150 = (30 / 150) × 100 = 20%. Use Mode 2 (X is what % of Y).

Question 4

What is the difference between percentage and percentage points?

Accepted Answer

A percentage point is the arithmetic difference between two percentages. For example, if a rate increases from 5% to 10%, it is a 5 percentage point increase but a 100% increase.

Question 5

Can I use this calculator for financial calculations?

Accepted Answer

Yes, but results are estimates. For critical financial decisions, consult a qualified financial professional.

Percentage Calculator

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