Definition

Noun: A symbol (%) used in writing and mathematics to denote that the number immediately preceding it represents a proportion or fraction out of one hundred. It is used to express percentages.

Usage

The percentage sign is placed directly after a numerical value without a space. * It is used to express rates, proportions, discounts, probabilities, and compositions. * In mathematics, it can also represent the modulo operation in some computing contexts, though this is a distinct usage.

Examples

• Expressing a Proportion: "The interest rate on the loan is 3.5% per year."
• Indicating a Discount: "All items in the store are now 50% off."
• Showing Composition: "The solution is 0.9% sodium chloride."
• Statistical Data: "Voter turnout was approximately 65%."

Advanced Usage

• In Computing: In many programming languages (e.g., Python, C), the symbol is used as the modulo operator, which returns the remainder of a division. For example, equals .
• Formatting: In typesetting and digital communication, it is standard to write the number and the percentage sign together without a space (e.g., 25%, not 25 %). Some style guides, particularly for scientific publishing, may recommend using a space, but the closed form is more common in general use.

Variants and Related Words

• Percent (noun/adverb): The word represented by the symbol . Example: "Twenty-five percent of the students passed."
• Percentage (noun): A rate, number, or amount in each hundred; the general concept. Example: "A large percentage of the budget was spent on research."
• Per cent: A less common variant spelling of "percent," chiefly used in British English.

Synonyms

• Percent symbol
• Percent sign

Related Phrases and Conventions

• Basis Point: One hundredth of one percent (0.01%), often used in finance. The percentage sign is implied.
• Percentage Points: A unit for the arithmetic difference of two percentages. For example, an increase from 10% to 13% is a rise of 3 percentage points (not 3%).

Noun

1. a sign (`%') used to indicate that the number preceding it should be understood as a proportion multiplied by 100