-1.09% is the change from 822 to 813
Calculation steps:
[( 813 - 822 ) ÷ 822] x 100 = -1.09%
Formula
Percentage change = [(813 - 822) / 822] x 100
Subtract the new number by the original number
813 - 822 = -9
-9 ÷ 822 = -0.010948905109489052
-0.010948905109489052 x 100 = -1.09%