38/46 as a percentage is 82.61%. This value shows how much of a whole the fraction represents when it is expressed in hundredths.
The fraction 38/46 can be reduced to 19/23, which is still an exact way to show the same portion. Whether you keep it as 38/46 or 19/23, the percentage stays the same.
In everyday use, you might see this kind of conversion in grades, test scores, or statistics. Knowing the percentage helps you compare the result to other numbers that are already in percent form.