The fraction 52/64 is equal to 81.25% when converted to a percentage. This means that if you had 64 equal parts of something and took 52 of those parts, you'd have 81.25% of the whole. It's a pretty high percentage, showing that you've got most of the total amount.
To put this in perspective, 81.25% is more than three-quarters but less than seven-eighths of the whole. It's like having most of a pizza, with just a few slices missing. In everyday situations, you might see this fraction used in things like test scores, where getting 52 out of 64 questions correct would be a solid performance.