-6.81% is the change from 822 to 766
Calculation steps:
[( 766 - 822 ) ÷ 822] x 100 = -6.81%
Formula
Percentage change = [(766 - 822) / 822] x 100
Subtract the new number by the original number
766 - 822 = -56
-56 ÷ 822 = -0.0681265206812652
-0.0681265206812652 x 100 = -6.81%