20.81% is the change from 620 to 749
Calculation steps:
[( 749 - 620 ) ÷ 620] x 100 = 20.81%
Formula
Percentage change = [(749 - 620) / 620] x 100
Subtract the new number by the original number
749 - 620 = 129
129 ÷ 620 = 0.20806451612903226
0.20806451612903226 x 100 = 20.81%