88.94% is the change from 434 to 820
Calculation steps:
[( 820 - 434 ) ÷ 434] x 100 = 88.94%
Formula
Percentage change = [(820 - 434) / 434] x 100
Subtract the new number by the original number
820 - 434 = 386
386 ÷ 434 = 0.8894009216589862
0.8894009216589862 x 100 = 88.94%