43.34% is the change from 586 to 840
Calculation steps:
[( 840 - 586 ) ÷ 586] x 100 = 43.34%
Formula
Percentage change = [(840 - 586) / 586] x 100
Subtract the new number by the original number
840 - 586 = 254
254 ÷ 586 = 0.4334470989761092
0.4334470989761092 x 100 = 43.34%