70.35% is the change from 344 to 586
Calculation steps:
[( 586 - 344 ) ÷ 344] x 100 = 70.35%
Formula
Percentage change = [(586 - 344) / 344] x 100
Subtract the new number by the original number
586 - 344 = 242
242 ÷ 344 = 0.7034883720930233
0.7034883720930233 x 100 = 70.35%