-99.29% is the change from 851 to 6
Calculation steps:
[( 6 - 851 ) ÷ 851] x 100 = -99.29%
Formula
Percentage change = [(6 - 851) / 851] x 100
Subtract the new number by the original number
6 - 851 = -845
-845 ÷ 851 = -0.9929494712103408
-0.9929494712103408 x 100 = -99.29%