31.29% is the change from 620 to 814
Calculation steps:
[( 814 - 620 ) ÷ 620] x 100 = 31.29%
Formula
Percentage change = [(814 - 620) / 620] x 100
Subtract the new number by the original number
814 - 620 = 194
194 ÷ 620 = 0.31290322580645163
0.31290322580645163 x 100 = 31.29%