108.93% is the change from 280 to 585
Calculation steps:
[( 585 - 280 ) ÷ 280] x 100 = 108.93%
Formula
Percentage change = [(585 - 280) / 280] x 100
Subtract the new number by the original number
585 - 280 = 305
305 ÷ 280 = 1.0892857142857142
1.0892857142857142 x 100 = 108.93%