Answer:
The percentage change is 26.7 % .
Step-by-step explanation:
Formula
\(Percentage\ change = \frac{Change\ in\ value\times 100}{Initial\ value}\)
Where change in value = Final value - initial value
As given
Over the course of a year, a classroom went from 15 students to 19 students.
Here
Final value = 19
initial value = 15
Put in the above
change in value = 19 - 15
= 4
Put in the percentage formula
\(Percentage\ change = \frac{4\times 100}{15}\)
\(Percentage\ change = \frac{400}{15}\)
Percentage change = 26.7 % (Approx)
Therefore the percentage change is 26.7 % .
