55.10% is what you get when you turn the fraction 54/98 into a percent (rounded to two decimal places). This makes it easy to compare with other percentages you might see.
The fraction 54/98 can also be simplified to 27/49, but the percentage form is often more useful in everyday situations like calculating discounts or test scores.
Remember that the percent 55.10% tells you that 54 out of 98 parts is just a little over half of the whole. This quick view helps you understand the size of the portion without doing any extra math.