In mathematics, a percentage (from Latin per centum "by a hundred") is a number or ratio expressed as a fraction of 100. ... A percentage is a dimensionless number (pure number); it has no unit of measurement.
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, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used.
