Due to lace of funding, the number of students enrolled at the city college went from 7000 last year to 4000 this year . fine the percent decrease in enrollment

There is 42.8% of decrease in enrollment comparing to previous year.

42.8% of 7000 is 3000 which is the difference. Just divide 3000/7000 to get the numbers

In other words, new enrollmeny is 57.1% of the previous one

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!