48.42% is the change from 285 to 423
Calculation steps:
[( 423 - 285 ) ÷ 285] x 100 = 48.42%
Formula
Percentage change = [(423 - 285) / 285] x 100
Subtract the new number by the original number
423 - 285 = 138
138 ÷ 285 = 0.4842105263157895
0.4842105263157895 x 100 = 48.42%