45/85 as a percentage is 52.94%. This value shows that the fraction is just over half of a whole.
The fraction 45/85 can be reduced to 9/17, which still represents the same portion of a whole. Whether you write it as a fraction or a percentage, it tells you that a little more than five out of ten parts are covered.
In everyday situations, you might see this percentage on a test score, a discount, or a progress bar. Knowing that 45/85 equals 52.94% makes it easy to compare it with other numbers that are already given in percent form.