Percent (noun)

A ratio expressed as a fraction of 100.

Origin:

Late 16th century: from latin per centum, literally 'by the hundred', from per 'by' + centum 'a hundred'. it was first used as a way of expressing interest rates, and later extended to other calculations.

Examples:

1. The company has seen a 30 percent increase in profits this year.
2. The latest polls show that 60 percent of the population supports the new policy.
3. The rate of inflation has risen by 2 percent this month.
4. He invested 20 percent of his savings in the stock market.
5. The exam was graded and the results showed that she scored 80 percent.