-86.92% is the change from 780 to 102
Calculation steps:
[( 102 - 780 ) ÷ 780] x 100 = -86.92%
Formula
Percentage change = [(102 - 780) / 780] x 100
Subtract the new number by the original number
102 - 780 = -678
-678 ÷ 780 = -0.8692307692307693
-0.8692307692307693 x 100 = -86.92%