-88.23% is the change from 773 to 91
Calculation steps:
[( 91 - 773 ) ÷ 773] x 100 = -88.23%
Formula
Percentage change = [(91 - 773) / 773] x 100
Subtract the new number by the original number
91 - 773 = -682
-682 ÷ 773 = -0.8822768434670116
-0.8822768434670116 x 100 = -88.23%