8/64 = 12.5%
A value of 12.5% can show up as a discount on a purchase or as the share of a group that chose a certain option. For example, if 8 of 64 seats are taken, that fraction describes how much of the seating is occupied.
A quick way to picture 8/64 is as one-eighth of a whole, like one slice in a pie cut into eight equal pieces. It’s a small but noticeable amount—more than one-tenth, but much less than one-quarter.
A common point of confusion is thinking that 12.5% means 12.5 whole items. It actually describes a portion of a whole, so the number of items depends on how large the group is.