24.15% is the change from 621 to 771
Calculation steps:
[( 771 - 621 ) ÷ 621] x 100 = 24.15%
Formula
Percentage change = [(771 - 621) / 621] x 100
Subtract the new number by the original number
771 - 621 = 150
150 ÷ 621 = 0.24154589371980675
0.24154589371980675 x 100 = 24.15%