-24.7% is the change from 911 to 686
Calculation steps:
[( 686 - 911 ) ÷ 911] x 100 = -24.7%
Formula
Percentage change = [(686 - 911) / 911] x 100
Subtract the new number by the original number
686 - 911 = -225
-225 ÷ 911 = -0.24698133918770582
-0.24698133918770582 x 100 = -24.7%