-20.69% is the change from 778 to 617
Calculation steps:
[( 617 - 778 ) ÷ 778] x 100 = -20.69%
Formula
Percentage change = [(617 - 778) / 778] x 100
Subtract the new number by the original number
617 - 778 = -161
-161 ÷ 778 = -0.2069408740359897
-0.2069408740359897 x 100 = -20.69%