52.28% is the change from 285 to 434
Calculation steps:
[( 434 - 285 ) ÷ 285] x 100 = 52.28%
Formula
Percentage change = [(434 - 285) / 285] x 100
Subtract the new number by the original number
434 - 285 = 149
149 ÷ 285 = 0.5228070175438596
0.5228070175438596 x 100 = 52.28%