There are 4129 students at the college. 2801 students are taking the mathematics class. To find the percentage, we must divide the part (how many students take math) by the whole (all college students). Here is what that would look like:
2801 / 4129= 0.67837
0.67837 *100=67.837
67.837 rounded to the nearest whole is 68.
Therefore, about 68% take math.