648/6645 = ≈9.75%
Rounded to 2 decimal places.
A value like 648/6645, or 9.75%, might describe the share of customers who choose a certain product, students who join an optional activity, or homes in a neighborhood that use solar panels. It is useful whenever a group wants to show that something happens to about one person out of every ten.
You can picture 9.75% as just a little less than 10%. For a quick estimate, imagine shading about 10 squares in a grid of 100, then leaving one small part unshaded.
A common mistake is treating 9.75% as nearly 1% because the decimal looks small. It is actually close to one-tenth, so it represents a noticeable minority rather than just a tiny fraction.