-15.23% is the change from 788 to 668
Calculation steps:
[( 668 - 788 ) ÷ 788] x 100 = -15.23%
Formula
Percentage change = [(668 - 788) / 788] x 100
Subtract the new number by the original number
668 - 788 = -120
-120 ÷ 788 = -0.15228426395939088
-0.15228426395939088 x 100 = -15.23%