-87.06% is the change from 773 to 100
Calculation steps:
[( 100 - 773 ) ÷ 773] x 100 = -87.06%
Formula
Percentage change = [(100 - 773) / 773] x 100
Subtract the new number by the original number
100 - 773 = -673
-673 ÷ 773 = -0.8706338939197931
-0.8706338939197931 x 100 = -87.06%