Answer:
70%
Explanation:
initial height= 9 feet
final height =2.7
change in height = 9 - 2.7 = 6.3
to find percent of change in height,
6.3/9 × 100 = 0.7 × 100 = 70%
70
9/100=0.09
9-2.7=6.3
6.3/0.09=70
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