27/57 as a percentage is 47.37%. This value gives a quick sense of how large the fraction is compared to a whole.
The fraction 27/57 can be simplified by dividing both numbers by their greatest common divisor, 3, which results in 9/19. Even in its reduced form, the fraction still represents the same proportion of a whole.
In everyday situations, you might see this kind of ratio when comparing parts of a group, like 27 out of 57 students who prefer a certain snack. Stating the result as 47.37% makes it easier for most people to understand at a glance.
Remember that percentages are just another way to talk about fractions, so you can switch between the two depending on what your audience finds clearer.