30/45 as a percentage is 66.67%. This number shows how much of a whole the fraction represents when we think in terms of hundredths. It’s a quick way to see the size of the fraction.
The fraction 30/45 can be simplified by dividing both numbers by 15, giving 2/3. Seeing it as 2 parts out of 3 helps understand why the percentage is close to two‑thirds of 100.
When you look at 66.67%, you can think of it as about two‑thirds of any amount. For example, if you have 100 dollars, 66.67 dollars would be the share represented by 30/45.
In everyday use, writing the fraction as a percentage makes it easier to compare with other numbers that are already in percent form, like sales discounts or test scores.