58/95 as a percentage is 61.05%. This number tells you how much of a whole the fraction represents when you think of it in terms of 100 parts.
The fraction 58/95 can be thought of as 58 pieces out of a total of 95 equal pieces. When you compare those pieces to a full set of 100, you end up with a little more than half, which is exactly the 61.05% we see.
Knowing the percentage makes it easier to compare this value with other numbers, like test scores or discounts, because most people are used to working with percentages rather than fractions.
