19.39% is the change from 660 to 788
Calculation steps:
[( 788 - 660 ) ÷ 660] x 100 = 19.39%
Formula
Percentage change = [(788 - 660) / 660] x 100
Subtract the new number by the original number
788 - 660 = 128
128 ÷ 660 = 0.19393939393939394
0.19393939393939394 x 100 = 19.39%