30.16% is the change from 620 to 807
Calculation steps:
[( 807 - 620 ) ÷ 620] x 100 = 30.16%
Formula
Percentage change = [(807 - 620) / 620] x 100
Subtract the new number by the original number
807 - 620 = 187
187 ÷ 620 = 0.3016129032258065
0.3016129032258065 x 100 = 30.16%