2.56% is the change from 585 to 600
Calculation steps:
[( 600 - 585 ) ÷ 585] x 100 = 2.56%
Formula
Percentage change = [(600 - 585) / 585] x 100
Subtract the new number by the original number
600 - 585 = 15
15 ÷ 585 = 0.02564102564102564
0.02564102564102564 x 100 = 2.56%