-21.05% is the change from 822 to 649
Calculation steps:
[( 649 - 822 ) ÷ 822] x 100 = -21.05%
Formula
Percentage change = [(649 - 822) / 822] x 100
Subtract the new number by the original number
649 - 822 = -173
-173 ÷ 822 = -0.21046228710462286
-0.21046228710462286 x 100 = -21.05%