21.58% is the change from 621 to 755
Calculation steps:
[( 755 - 621 ) ÷ 621] x 100 = 21.58%
Formula
Percentage change = [(755 - 621) / 621] x 100
Subtract the new number by the original number
755 - 621 = 134
134 ÷ 621 = 0.21578099838969403
0.21578099838969403 x 100 = 21.58%