-90.56% is the change from 869 to 82
Calculation steps:
[( 82 - 869 ) ÷ 869] x 100 = -90.56%
Formula
Percentage change = [(82 - 869) / 869] x 100
Subtract the new number by the original number
82 - 869 = -787
-787 ÷ 869 = -0.905638665132336
-0.905638665132336 x 100 = -90.56%