42/57 as a percentage is 73.68%. This number tells you how much of a whole 42 parts out of 57 represent when you look at it in terms of 100.
In everyday language, you can think of 73.68% as a little less than three‑quarters of something. If you had 57 pieces of candy and ate 42 of them, you would have eaten about 73.68% of the total.
Remember that percentages are just a way to compare a part to a whole, and 73.68% is the concise way to express the fraction 42/57 in that format.
