51.79% is the change from 280 to 425
Calculation steps:
[( 425 - 280 ) ÷ 280] x 100 = 51.79%
Formula
Percentage change = [(425 - 280) / 280] x 100
Subtract the new number by the original number
425 - 280 = 145
145 ÷ 280 = 0.5178571428571429
0.5178571428571429 x 100 = 51.79%