3.39% is the change from 590 to 610
Calculation steps:
[( 610 - 590 ) ÷ 590] x 100 = 3.39%
Formula
Percentage change = [(610 - 590) / 590] x 100
Subtract the new number by the original number
610 - 590 = 20
20 ÷ 590 = 0.03389830508474576
0.03389830508474576 x 100 = 3.39%