77.42% is the change from 434 to 770
Calculation steps:
[( 770 - 434 ) ÷ 434] x 100 = 77.42%
Formula
Percentage change = [(770 - 434) / 434] x 100
Subtract the new number by the original number
770 - 434 = 336
336 ÷ 434 = 0.7741935483870968
0.7741935483870968 x 100 = 77.42%