74.29% is the change from 280 to 488
Calculation steps:
[( 488 - 280 ) ÷ 280] x 100 = 74.29%
Formula
Percentage change = [(488 - 280) / 280] x 100
Subtract the new number by the original number
488 - 280 = 208
208 ÷ 280 = 0.7428571428571429
0.7428571428571429 x 100 = 74.29%