Shelby is 99.9 percent sure that her version of the incident is accurate.
Camille was pleased with her percentage of the bet she made at the horse race in the afternoon.2. Part of the whole of something presented in hundredths: Sally asked, "What is the percentage of winners in the lottery?"
Trina wonders what the percentage is of people who achieve a 100 percent on their driver's test. Her mother was in the top 75th percentile of her age when she took her last driver’s test.
2. A proportion or share in relation to a whole; a part: "The hecklers constituted only a small percentage of the audience."
3. An amount; such as, an allowance, duty, or commission, that varies in proportion to a larger sum, for example, total sales: "They are working for a percentage of the gross sales."
When preceded by the, percentage takes a singular verb:
"The percentage of unskilled workers is relatively small."
The percentage of errors in his term paper is excessive."
When preceded by a, percentage takes either a singular or plural verb, depending on the number of the noun in the prepositional phrase that follows:
"A small percentage of the new workers are unskilled."
"A large percentage of the crop was lost because of the lack of rain."
"A large percentage of the electorate still remains undecided."