The number of graduates is 5 10 > 480 new students are enrolled.

therefore

Compared with last year, the number of students in this school year has decreased!

Reduction rate

=(5 10-480)/3250

=0.92%

The second solution:

Total number of graduates =3250-5 10=2740.

Total number of schools after enrolling new students = 2740+480 = 3220.

therefore

Compared with last year, the number of students in this school year has decreased!

Reduction rate

=(3250-3220)/3250

=0.92%