18.27% is the change from 646 to 764
Calculation steps:
[( 764 - 646 ) ÷ 646] x 100 = 18.27%
Formula
Percentage change = [(764 - 646) / 646] x 100
Subtract the new number by the original number
764 - 646 = 118
118 ÷ 646 = 0.1826625386996904
0.1826625386996904 x 100 = 18.27%