20% is the change from 620 to 744
Calculation steps:
[( 744 - 620 ) ÷ 620] x 100 = 20%
Formula
Percentage change = [(744 - 620) / 620] x 100
Subtract the new number by the original number
744 - 620 = 124
124 ÷ 620 = 0.2
0.2 x 100 = 20%
Example