What is 9/45 as a percentage? It is 20.00%. This fraction simplifies easily and shows that the part is one‑fifth of the whole.
The fraction 9/45 can be reduced by dividing both numbers by 9, giving 1/5. That same value expressed as a percent tells us how many parts out of 100 are covered.
Seeing 20.00% helps you compare the fraction to other percentages you might encounter, like 25% or 50%. It’s a quick way to understand the size of the part.
In everyday use, you could say that 9 out of 45 items represent exactly one‑fifth, or 20.00%, of the total. This makes it easy to communicate the proportion in both fraction and percentage form.