-91% is the change from 911 to 82
Calculation steps:
[( 82 - 911 ) ÷ 911] x 100 = -91%
Formula
Percentage change = [(82 - 911) / 911] x 100
Subtract the new number by the original number
82 - 911 = -829
-829 ÷ 911 = -0.9099890230515917
-0.9099890230515917 x 100 = -91%