40.34% is the change from 585 to 821
Calculation steps:
[( 821 - 585 ) ÷ 585] x 100 = 40.34%
Formula
Percentage change = [(821 - 585) / 585] x 100
Subtract the new number by the original number
821 - 585 = 236
236 ÷ 585 = 0.40341880341880343
0.40341880341880343 x 100 = 40.34%