-98.6% is the change from 430 to 6
Calculation steps:
[( 6 - 430 ) ÷ 430] x 100 = -98.6%
Formula
Percentage change = [(6 - 430) / 430] x 100
Subtract the new number by the original number
6 - 430 = -424
-424 ÷ 430 = -0.986046511627907
-0.986046511627907 x 100 = -98.6%