53.49% is the change from 430 to 660
Calculation steps:
[( 660 - 430 ) ÷ 430] x 100 = 53.49%
Formula
Percentage change = [(660 - 430) / 430] x 100
Subtract the new number by the original number
660 - 430 = 230
230 ÷ 430 = 0.5348837209302325
0.5348837209302325 x 100 = 53.49%