54/80 as a percentage is 67.50%. This value tells you how much of a whole the fraction represents when expressed in a familiar percent format.
The fraction 54/80 can be simplified to 27/40, which still holds the same value. Whether you keep it as 54/80 or write it as 27/40, the percentage stays at 67.50%.
In everyday situations, you might use this percentage to compare parts of a whole, such as a test score or a portion of a budget. Knowing that 54 out of 80 equals 67.50% helps you quickly gauge performance or allocation.