-82.11% is the change from 911 to 163
Calculation steps:
[( 163 - 911 ) ÷ 911] x 100 = -82.11%
Formula
Percentage change = [(163 - 911) / 911] x 100
Subtract the new number by the original number
163 - 911 = -748
-748 ÷ 911 = -0.8210757409440176
-0.8210757409440176 x 100 = -82.11%