-87.82% is the change from 911 to 111
Calculation steps:
[( 111 - 911 ) ÷ 911] x 100 = -87.82%
Formula
Percentage change = [(111 - 911) / 911] x 100
Subtract the new number by the original number
111 - 911 = -800
-800 ÷ 911 = -0.8781558726673985
-0.8781558726673985 x 100 = -87.82%