24/86 as a percentage is 27.91%. This is the rounded value you get when you turn the fraction into a percent with two decimal places.
The fraction 24/86 can also be reduced to its simplest form, which is 12/43. Even though the numbers look different, they represent the same part of a whole, and the percentage stays the same.
In everyday situations, you might see this percentage when comparing parts of a group, like 24 out of 86 students who passed a test. Saying 27.91% makes it easier to understand how large the portion is.
Remember that percentages give a quick visual sense of size, while fractions are useful for exact calculations. Both are handy tools depending on what you need.