43/45 as a percentage is 95.56%. This value shows how close the fraction is to a full whole, just a little under 100 %.
Seeing the number as a percent makes it easy to compare with other values that are already in percent form. For example, a test score of 95.56 % would be considered excellent, indicating only a small amount of points were missed.
In everyday use, you might round the result to 96 % when quick estimates are needed, but the precise figure remains 95.56% for any situation that requires accuracy.