-12.18% is the change from 911 to 800
Calculation steps:
[( 800 - 911 ) ÷ 911] x 100 = -12.18%
Formula
Percentage change = [(800 - 911) / 911] x 100
Subtract the new number by the original number
800 - 911 = -111
-111 ÷ 911 = -0.12184412733260154
-0.12184412733260154 x 100 = -12.18%