64/664 = ≈9.64%
Rounded to 2 decimal places.
A fraction like 64/664 could describe a small group within a larger one, such as 64 students out of 664 attending an event or 64 products out of 664 being returned. In percentage form, that is about 9.64%, so it represents roughly one person or item out of every ten.
To picture it quickly, imagine a row of 100 squares with about 10 of them shaded. Since 9.64% is just under 10%, you can estimate it as about one-tenth of the whole, while remembering that it is slightly smaller.
A common mistake is to read 64/664 as 64%, because people may focus on the numerator and overlook the much larger denominator. The denominator represents the total group, so the fraction is closer to 10% than to 64%.