52/86 as a percentage is 60.47%. This value tells you how much of a whole the fraction represents when it is expressed in percent form.
The fraction 52/86 can be reduced to 26/43, which still represents the same part of a whole. Whether you write it as a fraction or a percent, it shows a little more than three‑fifths of the total.
In everyday situations, saying 60.47% is often easier to understand than the fraction. For example, if you scored 52 out of 86 points on a test, you earned roughly sixty percent of the possible marks.
Remember that the percentage is rounded to two decimal places, so the exact value might be a tiny bit higher or lower, but 60.47% is the standard way to report it.