-83.09% is the change from 822 to 139
Calculation steps:
[( 139 - 822 ) ÷ 822] x 100 = -83.09%
Formula
Percentage change = [(139 - 822) / 822] x 100
Subtract the new number by the original number
139 - 822 = -683
-683 ÷ 822 = -0.8309002433090025
-0.8309002433090025 x 100 = -83.09%