55.56% is the change from 621 to 966
Calculation steps:
[( 966 - 621 ) ÷ 621] x 100 = 55.56%
Formula
Percentage change = [(966 - 621) / 621] x 100
Subtract the new number by the original number
966 - 621 = 345
345 ÷ 621 = 0.5555555555555556
0.5555555555555556 x 100 = 55.56%