What are percentages? The word "percent" comes from the Latin "per centum", meaning "by hundred". It is calculated by multiplying the number of parts out of a whole by 100. So if you have a group of one hundred people, and two people are absent, then 98 people are present. This means 98% are present. If there's only one person absent, that would be 99 people, or 99%, are present. 

Percentages are a widely used and important mathematical concept. They can be used to determine the proportion of one number in relation to another number, so it is not surprising that they come up quite often. 

One of the more common uses for percentages is when you get your paycheck at work and see how much tax was withheld from your wages.

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