18/24 as a percentage is 75.00%. This tells you that the fraction represents three‑quarters of a whole, and when you write it as a percent it rounds to two decimal places.
The fraction 18/24 can be reduced by dividing both the numerator and denominator by their greatest common divisor, 6, giving you 3/4. Both forms—18/24 and 3/4—describe the same part of a whole, just in different ways.
Knowing that 75.00% equals three‑quarters is handy in everyday situations, like figuring out discounts, grades, or how much of a project is finished. It lets you quickly compare parts of a whole without needing to keep the fraction in mind.