-86.89% is the change from 778 to 102
Calculation steps:
[( 102 - 778 ) ÷ 778] x 100 = -86.89%
Formula
Percentage change = [(102 - 778) / 778] x 100
Subtract the new number by the original number
102 - 778 = -676
-676 ÷ 778 = -0.8688946015424165
-0.8688946015424165 x 100 = -86.89%