27/60 as a percentage is 45.00%. This value tells you how much of a whole the fraction represents when you look at it in terms of hundredths.
The fraction 27/60 can also be reduced to 9/20, which is easier to compare with other common fractions. Both forms show the same part of a whole, just expressed differently.
In everyday situations, you might see 45.00% on a report card, a discount tag, or a test score. Rounding to two decimal places makes the number clear and tidy for quick reference.