144.29% is the change from 280 to 684
Calculation steps:
[( 684 - 280 ) ÷ 280] x 100 = 144.29%
Formula
Percentage change = [(684 - 280) / 280] x 100
Subtract the new number by the original number
684 - 280 = 404
404 ÷ 280 = 1.4428571428571428
1.4428571428571428 x 100 = 144.29%