138/368 = 37.5%
A value like 138/368, or 37.5%, can show up when about three-eighths of a group meets a condition. For example, it could describe the share of students who take the bus, customers who choose a certain product, or days when a team wins.
You can picture 37.5% as a little more than one-third but less than one-half. A quick mental estimate is that it is close to 40%, so in a group of 100 items, you would expect around 38 of them to fit the category.
One common point of confusion is thinking that 37.5% means 37.5 whole items. Percentages describe a portion of a total, so the actual number of items depends on the size of the group.