Percentage is in real-world shows how a portion of something compares to the whole.

Percentage is often denoted by the percent sign ‘%’.

**Formula to calculate percentage using a calculator.**

First you need to understand the three terms used in percentage, they are; Part, whole and and percentage.

- Start by dividing the part by the whole using your calculator.
- Then if your calculator has a percentage button, press it to determine the percentage.
- And if your calculator does not have such a button, multiply your previous answer by 100 to determine the percentage.