64/660 = ≈9.7%
Rounded to 2 decimal places.
A fraction like 64/660 can show up when 64 people out of a group of 660 choose a certain option, such as joining a club or answering “yes” to a survey question. That amount is about 9.7%, so it represents a small but noticeable part of the whole.
To picture 64/660 quickly, think of about 10 out of every 100 items, or roughly 1 out of every 10 people. Since 64 is a little less than one-tenth of 660, the fraction should be just under 10%.
A common mistake is to think 64/660 is close to 64%, because people may focus on the numerator and overlook the much larger denominator. The denominator represents the entire group, so it matters when judging how large the fraction really is.