-28.84% is the change from 430 to 306
Calculation steps:
[( 306 - 430 ) ÷ 430] x 100 = -28.84%
Formula
Percentage change = [(306 - 430) / 430] x 100
Subtract the new number by the original number
306 - 430 = -124
-124 ÷ 430 = -0.28837209302325584
-0.28837209302325584 x 100 = -28.84%