45 divided by 89 equals about 50.56% when you turn it into a percent. This is the rounded value you get when you express the fraction 45/89 as a percentage.
The fraction 45/89 is a little more than one‑half. Since 45 is just a few numbers short of the midpoint of 89, the result sits close to 50 % but a bit higher.
People often use this kind of conversion to compare parts of a whole, especially in surveys or test scores. Saying “45 out of 89 is 50.56%” makes it easier to see how big the portion is at a glance.
Remember, the percentage is rounded to two decimal places, so the exact value is a little more precise than the figure shown, but 50.56% is accurate enough for most everyday purposes.