5Watch your favourite Channel 5 TV shows and other English dramas, comedy, movies, documentaries and more on . Stream anytime on your mobile, tablet, computer and Smart5 Percent. Five percent (5%) means 5 per 100 = 0.05. 5% is a fractional representation of a value, which snifies 5 parts out of 100. For example, if the value is 100, then 5% of that value would be 5 (100 multiplied by 5% or 0.05).