18/97 as a percentage is 18.56%. This value tells you how much of a whole 18 parts would be out of 97 equal parts, expressed in a way that's easy to compare with other percentages.
The fraction 18/97 is a proper fraction, meaning the numerator (18) is smaller than the denominator (97). It represents a little less than one fifth of a whole, which is why the percentage lands just under 20%.
In everyday use, you might see this kind of number when looking at survey results, test scores, or any situation where a small portion of a larger group is measured. Knowing the percentage makes it simple to understand and communicate the size of that portion.