-90.21% is the change from 838 to 82
Calculation steps:
[( 82 - 838 ) ÷ 838] x 100 = -90.21%
Formula
Percentage change = [(82 - 838) / 838] x 100
Subtract the new number by the original number
82 - 838 = -756
-756 ÷ 838 = -0.9021479713603818
-0.9021479713603818 x 100 = -90.21%