-88.97% is the change from 780 to 86
Calculation steps:
[( 86 - 780 ) ÷ 780] x 100 = -88.97%
Formula
Percentage change = [(86 - 780) / 780] x 100
Subtract the new number by the original number
86 - 780 = -694
-694 ÷ 780 = -0.8897435897435897
-0.8897435897435897 x 100 = -88.97%