52/64 = 81.25%
A value like 52/64, or 81.25%, could describe a quiz score, how much of a project is finished, or the share of people who prefer one option in a survey. It means the result is a little more than four-fifths of the whole.
To picture it quickly, imagine a bar split into 64 equal pieces with 52 shaded. You can also think of it as close to 80%, so a little more than four out of every five parts.
One common mix-up is treating 81.25% as if it were 81.25 whole items. A percentage describes a share of a total, so the number of actual items depends on how large the total is.