12/25 = 48%
A value of 48% could describe how many students in a class prefer a certain lunch, or how much of a phone battery remains. It’s a little less than half, so it can help you make a quick comparison.
To picture 12/25, imagine a group of 25 equal parts with 12 shaded in. It’s just under half the group, since half of 25 is a little more than 12.
One common mix-up is treating 48% as exactly half; half is 50%, so 48% is slightly less. Also, the fraction 12/25 refers to 12 parts out of 25, not 12 parts out of 100.