-90.2% is the change from 837 to 82
Calculation steps:
[( 82 - 837 ) ÷ 837] x 100 = -90.2%
Formula
Percentage change = [(82 - 837) / 837] x 100
Subtract the new number by the original number
82 - 837 = -755
-755 ÷ 837 = -0.9020310633213859
-0.9020310633213859 x 100 = -90.2%