42/54 as a percentage is 77.78%. This is the simplified way to see how much of a whole the fraction represents when expressed in percent form.
The fraction 42/54 can be reduced to 7/9, which still gives the same percentage result. Seeing it as 77.78% helps you quickly compare it to other numbers that are already in percent.
When you work with everyday problems—like figuring out a discount or a test score—turning fractions into percentages makes the numbers easier to understand. Knowing that 42 out of 54 is about 78% tells you it’s just a little under three‑quarters of the total.
Overall, remembering that 42/54 equals 77.78% gives you a handy reference point for similar fractions, especially when you need a fast estimate without doing the math each time.