-87.13% is the change from 769 to 99
Calculation steps:
[( 99 - 769 ) ÷ 769] x 100 = -87.13%
Formula
Percentage change = [(99 - 769) / 769] x 100
Subtract the new number by the original number
99 - 769 = -670
-670 ÷ 769 = -0.871261378413524
-0.871261378413524 x 100 = -87.13%