23.1% is the change from 645 to 794
Calculation steps:
[( 794 - 645 ) ÷ 645] x 100 = 23.1%
Formula
Percentage change = [(794 - 645) / 645] x 100
Subtract the new number by the original number
794 - 645 = 149
149 ÷ 645 = 0.2310077519379845
0.2310077519379845 x 100 = 23.1%