51/54 as a percentage is 94.44%. This means that the fraction is very close to a whole number, just a little shy of 100 %. It’s a handy way to see how large the part is compared to the whole.
The fraction 51/54 can be reduced to 17/18, which still represents the same amount. Both forms show that the numerator is only a few units less than the denominator, giving the high percentage value we see.
In everyday situations, a result like 94.44% might be used to describe a test score, a completion rate, or a success ratio. It tells you that almost the entire target was met, with only a small shortfall.