98.6% is the change from 430 to 854
Calculation steps:
[( 854 - 430 ) ÷ 430] x 100 = 98.6%
Formula
Percentage change = [(854 - 430) / 430] x 100
Subtract the new number by the original number
854 - 430 = 424
424 ÷ 430 = 0.986046511627907
0.986046511627907 x 100 = 98.6%