378/375 = 100.8%
A fraction like 378/375, or 100.8%, can show up when a result is slightly higher than the original target. For example, a student might finish 378 pages when the goal was 375, or a store might sell just a little more than its sales target.
You can picture it as one whole group plus a tiny extra amount. Since 100% represents the full target, 100.8% is only 0.8% above it, so it is very close to 100%—roughly one extra item for every 125 items.
A common mistake is thinking that any percentage above 100% must mean the amount is twice as large. In this case, 100.8% means just slightly more than the original amount, while 200% would mean twice as much.