-33.72% is the change from 430 to 285
Calculation steps:
[( 285 - 430 ) ÷ 430] x 100 = -33.72%
Formula
Percentage change = [(285 - 430) / 430] x 100
Subtract the new number by the original number
285 - 430 = -145
-145 ÷ 430 = -0.3372093023255814
-0.3372093023255814 x 100 = -33.72%