What is 20/50 as a percentage? It is 40.00%. This percentage shows how much of a whole the fraction represents when expressed in hundredths.
The fraction 20/50 can be simplified to 2/5, which still corresponds to the same 40.00% value. Seeing the fraction and its percentage together helps you compare parts of a whole quickly.
In everyday situations, you might use 40.00% to describe a discount, a test score, or any situation where 20 out of 50 items are selected. The percentage makes the proportion easy to understand at a glance.
Remember that 40.00% is just another way to talk about the same amount represented by 20/50, and you can switch between the two forms depending on what makes the most sense for your audience.