-89.78% is the change from 773 to 79
Calculation steps:
[( 79 - 773 ) ÷ 773] x 100 = -89.78%
Formula
Percentage change = [(79 - 773) / 773] x 100
Subtract the new number by the original number
79 - 773 = -694
-694 ÷ 773 = -0.8978007761966365
-0.8978007761966365 x 100 = -89.78%