- For the Iotian tax system, please see Percentage.
Percent was a mathematical term, expressing the number of something as a fraction of one hundred.
Starships counted the strength of their force fields, life support system, hull plating, and weapons in percent during an attack. (ENT: "Regeneration")
Milk was classified by its percentage of fat. Two percent milk was available from Enterprise NX-01's drink dispenser. (ENT: "Terra Prime")
Examples
When the Borg assimilated the transport Arctic One in 2153, they'd increased its mass by 3 percent when Enterprise NX-01 first met them. (ENT: "Regeneration")
In 2372, the Ferengi imposed an unfair 6 percent tariff on woolen goods they traded with the Karemma, claiming that the tax was added to help offset the "lost income of Tarkalean sheep herders." (DS9: "Starship Down")
In 2374, the blood pressure of Jadzia Dax dropped by 20 percent. (DS9: "Change of Heart")
Slug-o-Cola contained 43 percent live algae in every bottle. (DS9: "Profit and Lace")
The same year, Seven of Nine was given a list of dietary requirements by The Doctor; "two hundred fifty grams glycoproteins consisting of 53 percent polypeptides and 26 percent fibrous glycogen". (VOY: "The Raven")
In 2374, the female population on Ferenginar made up 53.5 percent. (DS9: "Profit and Lace")
Over 70 percent of the organisms on Earth are bacteria. (ENT: "The Andorian Incident")