How do you calculate percentage?

To calculate a percentage, divide the part by the whole and multiply by 100. Formula: (Part / Whole) × 100 = Percentage.

How do I calculate percentage difference?

To find the percentage difference between two numbers, subtract the old value from the new value, divide by the absolute value of the old value, and multiply by 100. Formula: ((New - Old) / |Old|) × 100.

Utility

Percentage Calculator

Instantly solve three common types of percentage problems.

1. What is X% of Y?

2. X is what percent of Y?

3. Percentage Change

Understanding Percentages

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%". For example, 45% (read as "forty-five percent") is equal to 45 / 100, 45:100, or 0.45.

Percentage = (Part / Whole) × 100

Common Percentage Formulas

How to calculate percentage change?

Percentage change equals the change in value divided by the absolute value of the original value, multiplied by 100. Formula: ((New Value - Old Value) / |Old Value|) × 100.

How to find what percent X is of Y?

Divide X by Y, then multiply the result by 100. Formula: (X / Y) × 100.