Mathematics Quizzes Ratio and Proportion

Question:
Determine whether the change is an increase or decrease. Then obtain the percent of increase or decrease. Round the answer to the nearest whole percent.
old: 345 acres
new: 380 acres

Option A):
10.14% increase
Option B):
11.14% decrease
Option C):
35.12% increase

Correct Answer is Option A):
10.14% increase