48.78% is the change from 287 to 427
Calculation steps:
[( 427 - 287 ) ÷ 287] x 100 = 48.78%
Formula
Percentage change = [(427 - 287) / 287] x 100
Subtract the new number by the original number
427 - 287 = 140
140 ÷ 287 = 0.4878048780487805
0.4878048780487805 x 100 = 48.78%