20.77% is the change from 621 to 750
Calculation steps:
[( 750 - 621 ) ÷ 621] x 100 = 20.77%
Formula
Percentage change = [(750 - 621) / 621] x 100
Subtract the new number by the original number
750 - 621 = 129
129 ÷ 621 = 0.20772946859903382
0.20772946859903382 x 100 = 20.77%