79.07% is the change from 430 to 770
Calculation steps:
[( 770 - 430 ) ÷ 430] x 100 = 79.07%
Formula
Percentage change = [(770 - 430) / 430] x 100
Subtract the new number by the original number
770 - 430 = 340
340 ÷ 430 = 0.7906976744186046
0.7906976744186046 x 100 = 79.07%