42.86% is the change from 588 to 840
Calculation steps:
[( 840 - 588 ) ÷ 588] x 100 = 42.86%
Formula
Percentage change = [(840 - 588) / 588] x 100
Subtract the new number by the original number
840 - 588 = 252
252 ÷ 588 = 0.42857142857142855
0.42857142857142855 x 100 = 42.86%