22.03% is the change from 631 to 770
Calculation steps:
[( 770 - 631 ) ÷ 631] x 100 = 22.03%
Formula
Percentage change = [(770 - 631) / 631] x 100
Subtract the new number by the original number
770 - 631 = 139
139 ÷ 631 = 0.2202852614896989
0.2202852614896989 x 100 = 22.03%