-89.84% is the change from 837 to 85
Calculation steps:
[( 85 - 837 ) ÷ 837] x 100 = -89.84%
Formula
Percentage change = [(85 - 837) / 837] x 100
Subtract the new number by the original number
85 - 837 = -752
-752 ÷ 837 = -0.8984468339307049
-0.8984468339307049 x 100 = -89.84%