-90.3% is the change from 845 to 82
Calculation steps:
[( 82 - 845 ) ÷ 845] x 100 = -90.3%
Formula
Percentage change = [(82 - 845) / 845] x 100
Subtract the new number by the original number
82 - 845 = -763
-763 ÷ 845 = -0.9029585798816568
-0.9029585798816568 x 100 = -90.3%