-15.68% is the change from 778 to 656
Calculation steps:
[( 656 - 778 ) ÷ 778] x 100 = -15.68%
Formula
Percentage change = [(656 - 778) / 778] x 100
Subtract the new number by the original number
656 - 778 = -122
-122 ÷ 778 = -0.15681233933161953
-0.15681233933161953 x 100 = -15.68%