47.74% is the change from 287 to 424
Calculation steps:
[( 424 - 287 ) ÷ 287] x 100 = 47.74%
Formula
Percentage change = [(424 - 287) / 287] x 100
Subtract the new number by the original number
424 - 287 = 137
137 ÷ 287 = 0.47735191637630664
0.47735191637630664 x 100 = 47.74%