-88.29% is the change from 777 to 91
Calculation steps:
[( 91 - 777 ) ÷ 777] x 100 = -88.29%
Formula
Percentage change = [(91 - 777) / 777] x 100
Subtract the new number by the original number
91 - 777 = -686
-686 ÷ 777 = -0.8828828828828829
-0.8828828828828829 x 100 = -88.29%