816/816 = 100%
A fraction like 816/816 represents a complete amount, so it equals 100%. You might see this when every student turns in an assignment, a phone battery is fully charged, or a team completes all the tasks on a checklist.
To picture it quickly, imagine a whole pizza with every slice still included, or a progress bar filled from one end to the other. Since the top and bottom numbers are the same, you can recognize that the fraction represents one full whole.
A common mistake is thinking that a large number like 816 makes the value greater than 100%. The size of the numbers does not matter here; because the numerator and denominator match, the fraction describes the entire amount.