-14.78% is the change from 778 to 663
Calculation steps:
[( 663 - 778 ) ÷ 778] x 100 = -14.78%
Formula
Percentage change = [(663 - 778) / 778] x 100
Subtract the new number by the original number
663 - 778 = -115
-115 ÷ 778 = -0.14781491002570693
-0.14781491002570693 x 100 = -14.78%