246/246 = 100%
A value like 246/246 shows up when every item in a group is accounted for or completed. For example, if all 246 students submit a permission form, the school has received 100% of the forms.
You can picture it as one completely filled box, with nothing missing or left over. Since the top and bottom numbers are the same, you can quickly recognize that the fraction represents a whole.
A common mistake is thinking the large numbers make the percentage larger than 100%. The numbers tell you the size of the group, but because the numerator includes the entire denominator, the result is exactly one whole.