-98.33% is the change from 778 to 13
Calculation steps:
[( 13 - 778 ) ÷ 778] x 100 = -98.33%
Formula
Percentage change = [(13 - 778) / 778] x 100
Subtract the new number by the original number
13 - 778 = -765
-765 ÷ 778 = -0.9832904884318766
-0.9832904884318766 x 100 = -98.33%