-33.42% is the change from 778 to 518
Calculation steps:
[( 518 - 778 ) ÷ 778] x 100 = -33.42%
Formula
Percentage change = [(518 - 778) / 778] x 100
Subtract the new number by the original number
518 - 778 = -260
-260 ÷ 778 = -0.3341902313624679
-0.3341902313624679 x 100 = -33.42%