81.57% is the change from 434 to 788
Calculation steps:
[( 788 - 434 ) ÷ 434] x 100 = 81.57%
Formula
Percentage change = [(788 - 434) / 434] x 100
Subtract the new number by the original number
788 - 434 = 354
354 ÷ 434 = 0.815668202764977
0.815668202764977 x 100 = 81.57%