10/28 as a percentage is 35.71%. This is the rounded value you get when you compare the part (10) to the whole (28) and express it in hundredths.
The fraction 10/28 can be simplified to 5/14, which still represents the same portion of a whole. Whether you write it as 10/28 or 5/14, the percentage stays the same because the relationship between the numbers doesn’t change.
Knowing the percentage helps you quickly see that the fraction is a little over one‑third of the whole. It’s useful in everyday situations like figuring out discounts, test scores, or any time you need to compare a part to a total.