20.85% is the change from 657 to 794
Calculation steps:
[( 794 - 657 ) ÷ 657] x 100 = 20.85%
Formula
Percentage change = [(794 - 657) / 657] x 100
Subtract the new number by the original number
794 - 657 = 137
137 ÷ 657 = 0.2085235920852359
0.2085235920852359 x 100 = 20.85%