-16.55% is the change from 822 to 686
Calculation steps:
[( 686 - 822 ) ÷ 822] x 100 = -16.55%
Formula
Percentage change = [(686 - 822) / 822] x 100
Subtract the new number by the original number
686 - 822 = -136
-136 ÷ 822 = -0.1654501216545012
-0.1654501216545012 x 100 = -16.55%