18.96% is the change from 670 to 797
Calculation steps:
[( 797 - 670 ) ÷ 670] x 100 = 18.96%
Formula
Percentage change = [(797 - 670) / 670] x 100
Subtract the new number by the original number
797 - 670 = 127
127 ÷ 670 = 0.18955223880597014
0.18955223880597014 x 100 = 18.96%