21.39% is the change from 631 to 766
Calculation steps:
[( 766 - 631 ) ÷ 631] x 100 = 21.39%
Formula
Percentage change = [(766 - 631) / 631] x 100
Subtract the new number by the original number
766 - 631 = 135
135 ÷ 631 = 0.21394611727416799
0.21394611727416799 x 100 = 21.39%