-30% is the change from 430 to 301
Calculation steps:
[( 301 - 430 ) ÷ 430] x 100 = -30%
Formula
Percentage change = [(301 - 430) / 430] x 100
Subtract the new number by the original number
301 - 430 = -129
-129 ÷ 430 = -0.3
-0.3 x 100 = -30%
Example