644/798 = ≈80.7%
Rounded to 2 decimal places.
A value like 644/798, or about 80.7%, could describe the share of students who turned in an assignment, customers who chose a certain product, or tasks completed on time. It shows that most of the group met the goal, but a noticeable portion did not.
To picture it quickly, imagine a group of 100 people: about 81 would be included and about 19 would not. You can also think of it as a little more than four-fifths, since four-fifths is 80%.
A common mistake is treating 80.7% as if it means exactly 80%, even though the extra 0.7 percentage points may matter in a large group. Another point of confusion is assuming the fraction is already simplified; 644/798 can be reduced, but its value stays the same.