34.62% is what you get when you turn the fraction 18/52 into a percentage.
The fraction 18/52 can be reduced to 9/26, which is a little more than one‑third. Thinking of it as about one‑third helps you picture the size of the number without doing any math.
In everyday life, you might see this kind of percentage on a report card, a discount, or a test score. Knowing that 18 out of 52 is 34.62% lets you quickly compare it to other percentages and understand how it fits into the bigger picture.