Per Centum Instant

The term is conceptually identical to one "cent" being 11001 over 100 end-fraction of a dollar, thus 37 cents is 37 percent of a dollar. Deep Mathematical Meaning

Percentages over 100% (e.g., 200%) signify a whole plus an additional amount (2 times the original amount). Related Technical Terms Per Mille (‰): Parts per thousand (1 in 1,000). per centum

The term evolved over time. "Per" was often abbreviated to "p", and "cento" was contracted until it eventually became the modern symbol: %. The term is conceptually identical to one "cent"

If a whole is divided into 100 parts, a "percentage" indicates how many of those parts make up the subset being discussed. The term evolved over time

"Percent" (one word) is standard American English, while "per cent" (two words) is more common in British English. How to Pronounce Percent - Deep English