18.58% is the change from 646 to 766
Calculation steps:
[( 766 - 646 ) ÷ 646] x 100 = 18.58%
Formula
Percentage change = [(766 - 646) / 646] x 100
Subtract the new number by the original number
766 - 646 = 120
120 ÷ 646 = 0.18575851393188855
0.18575851393188855 x 100 = 18.58%