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.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

SearchSecurity

SearchHealthIT

  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...

SearchDisasterRecovery

SearchStorage

  • hot plugging

    Hot plugging is the addition of a component to a running computer system without significant interruption to the operation of the...

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification and is used in internally mounted ...

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science ...

Close