50.23% is the change from 430 to 646
Calculation steps:
[( 646 - 430 ) ÷ 430] x 100 = 50.23%
Formula
Percentage change = [(646 - 430) / 430] x 100
Subtract the new number by the original number
646 - 430 = 216
216 ÷ 430 = 0.5023255813953489
0.5023255813953489 x 100 = 50.23%