Answer:
20%
Step-by-step explanation:
If it increased from 380 to 456, first you need to find the difference.
456 - 380 = 76
Now, you must divide the original number by 76, which is 380.
76/380 = 0.2
Convert 0.2 to a percentage.
0.2 = 20%
The seventh grade enrollment at Goddard increased by 20%.
I hope it all works out well for you in your class :)
