49.47% is the change from 281 to 420
Calculation steps:
[( 420 - 281 ) ÷ 281] x 100 = 49.47%
Formula
Percentage change = [(420 - 281) / 281] x 100
Subtract the new number by the original number
420 - 281 = 139
139 ÷ 281 = 0.49466192170818507
0.49466192170818507 x 100 = 49.47%