15/69 as a percentage is 21.74%. This simple figure tells you how much of a whole the fraction represents when you think in terms of hundredths.
The fraction 15/69 can be reduced to its simplest form, 5/23, but the percentage stays the same. Whether you write it as 15/69 or 5/23, the proportion of the whole does not change.
Knowing the percentage is handy for quick comparisons. For example, if you have 15 out of 69 items, you have about a fifth of the total, which is easy to see with the 21.74% figure.
In everyday life, percentages like this help you understand parts of a group, such as scores, survey results, or any situation where you need to see a portion of a whole at a glance.
