Respuesta :

Percentage of change = 50%

Explanation:

Old number of students in the cafeteria= 8

New number of students in the cafeteria= 12

percentage of change = (New - old)/old × 100

percentage of change = (12 - 8)/8 × 100

= 4/8 × 100

= 1/2 × 100

Percentage of change = 50%