Percent
来自Big Physics
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mid 16th century: from per + cent, perhaps an abbreviation of pseudo-Latin per centum .
wiktionary
From New Latin per centum(“by the hundred”).
etymonline
percent
"by the hundred;" with a preceding numeral expressing a proportion of the whole amount, 1560s, per cent, from Modern Latin per centum "by the hundred" (see per and see hundred). Until early 20c. often treated as an abbreviation and punctuated accordingly.