28.34% is the change from 434 to 557
Calculation steps:
[( 557 - 434 ) ÷ 434] x 100 = 28.34%
Formula
Percentage change = [(557 - 434) / 434] x 100
Subtract the new number by the original number
557 - 434 = 123
123 ÷ 434 = 0.2834101382488479
0.2834101382488479 x 100 = 28.34%