-86.83% is the change from 911 to 120
Calculation steps:
[( 120 - 911 ) ÷ 911] x 100 = -86.83%
Formula
Percentage change = [(120 - 911) / 911] x 100
Subtract the new number by the original number
120 - 911 = -791
-791 ÷ 911 = -0.8682766190998902
-0.8682766190998902 x 100 = -86.83%