# Percentage

## Number or ratio expressed as a fraction of 100 / From Wikipedia, the free encyclopedia

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"Percent" redirects here. For the symbol, see Percent sign.

"Per cent" redirects here. For the unit of currency, see cent (currency).

In mathematics, a **percentage** (from Latin * per centum* 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign (%),

^{[1]}although the abbreviations

*pct.*,

*pct*, and sometimes

*pc*are also used.

^{[2]}A percentage is a dimensionless number (pure number), primarily used for expressing proportions, but percent is nonetheless a unit of measurement in its orthography and usage.

^{[3]}