Browse Definitions:
Definition

per cent symbol (%)

The per cent symbol is used in mathematics, engineering, and science to indicate parts per hundred. The symbol resembles a fraction with zero in both the numerator and the denominator ( or %).

Suppose m and n are integer s. The ratio or quotient m / n is converted to a percentage by multiplying by 100, and then reducing the result to decimal form. Thus, for example, to convert 3/5 to a percentage, we first multiply by 100, getting (300/5)%, and then reduce this to its simplest form, obtaining 60%. If we have 30/5 and want to convert it to a percentage, we follow the same procedure, obtaining (3000/5)% which reduces to 600%.

If we have a decimal number and want to convert it to a percentage, we simply multiply it by 100. Therefore, 0.6 is 60%, while 6.0 is 600%.

Percentages are sometimes used to indicate the extent to which a quantity increases or decreases. Such percentages can be greater than 100, indicating an increase to more than twice the original value, or negative, indicating a decrease in a value. For example, suppose a light aircraft is traveling at 50 meters per second (m/s). If its speed changes to 125 m/s, it is an increase of 75 m/s which is 1.5 times the original speed, so the speed is said to change by +150%. If the speed changes from 50 m/s to only 10 m/s, it decreases by 4/5, or 80%, of the original speed, so the speed is said to change by -80%.

Compare per mil symbol . Also see Mathematical Symbols .

This was last updated in March 2011

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

SearchSecurity

  • evil maid attack

    An evil maid attack is a security exploit that targets a computing device that has been shut down and left unattended.  An evil ...

  • Common Body of Knowledge (CBK)

    In security, Common Body of Knowledge (CBK) is a comprehensive framework of all the relevant subjects a security professional ...

  • rootkit

    A rootkit is a program or, more often, a collection of software tools that gives a threat actor remote access to and control over...

SearchHealthIT

  • value-based healthcare

    Value-based healthcare, also known as value-based care, is a payment model that rewards healthcare providers for providing ...

  • health informatics

    Health informatics is the practice of acquiring, studying and managing health data and applying medical concepts in conjunction ...

  • clinical trial

    A clinical trial, also known as a clinical research study, is a protocol to evaluate the effects and efficacy of experimental ...

SearchDisasterRecovery

  • crisis communication

    Crisis communication is a method of corresponding with people and organizations during a disruptive event to provide them with ...

  • Zerto

    Zerto is a storage software vendor that specializes in enterprise-class business continuity and disaster recovery in virtual and ...

  • crisis management plan (CMP)

    A crisis management plan (CMP) is a document that outlines the processes an organization will use to respond to a critical ...

SearchStorage

  • SSD write cycle

    An SSD write cycle is the process of programming data to a NAND flash memory chip in a solid-state storage device.

  • data storage

    Data storage is the collective methods and technologies that capture and retain digital information on electromagnetic, optical ...

  • hard disk

    A hard disk is part of a unit -- often called a disk drive, hard drive or hard disk drive -- that stores and provides relatively ...

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close