12/98 as a percentage is 12.24%. This is the rounded value you get when you express the fraction in terms of one hundred parts.
The fraction 12/98 can also be written in its simplest form as 6/49, which shows the same value in a more reduced way. Whether you use 12/98 or 6/49, the proportion stays the same.
Knowing the percentage helps when you compare it to other numbers, such as test scores or discount rates. A quick, rounded figure like 12.24% is easy to read and works well in everyday calculations.