57.14% is the change from 280 to 440
Calculation steps:
[( 440 - 280 ) ÷ 280] x 100 = 57.14%
Formula
Percentage change = [(440 - 280) / 280] x 100
Subtract the new number by the original number
440 - 280 = 160
160 ÷ 280 = 0.5714285714285714
0.5714285714285714 x 100 = 57.14%