50.09% is the change from 585 to 878
Calculation steps:
[( 878 - 585 ) ÷ 585] x 100 = 50.09%
Formula
Percentage change = [(878 - 585) / 585] x 100
Subtract the new number by the original number
878 - 585 = 293
293 ÷ 585 = 0.5008547008547009
0.5008547008547009 x 100 = 50.09%