15/63 as a percentage is 23.81%. This value comes from simplifying the fraction and then expressing it in percent form.
The fraction 15/63 can be reduced to 5/21, which is easier to work with. When you look at it as a part of a whole, it represents just under one quarter.
In everyday terms, 23.81% means that for every 100 units, about 24 of them would be covered by the fraction 15/63. This makes it simple to compare with other percentages you might encounter.