18.42% is the change from 657 to 778
Calculation steps:
[( 778 - 657 ) ÷ 657] x 100 = 18.42%
Formula
Percentage change = [(778 - 657) / 657] x 100
Subtract the new number by the original number
778 - 657 = 121
121 ÷ 657 = 0.1841704718417047
0.1841704718417047 x 100 = 18.42%