69.23% is the change from 585 to 990
Calculation steps:
[( 990 - 585 ) ÷ 585] x 100 = 69.23%
Formula
Percentage change = [(990 - 585) / 585] x 100
Subtract the new number by the original number
990 - 585 = 405
405 ÷ 585 = 0.6923076923076923
0.6923076923076923 x 100 = 69.23%