75.68% is the percentage equivalent of the fraction 56/74. This value tells you how much of a whole the fraction represents when expressed in percent form.
The fraction 56/74 can be simplified to 28/37, which still reflects the same proportion. Whether you use the original or the simplified form, the percentage stays the same.
Knowing the percentage helps you compare this fraction to other numbers easily. For example, it shows that 56/74 is a little more than three‑quarters of a whole.