-76.65% is the change from 424 to 99
Calculation steps:
[( 99 - 424 ) ÷ 424] x 100 = -76.65%
Formula
Percentage change = [(99 - 424) / 424] x 100
Subtract the new number by the original number
99 - 424 = -325
-325 ÷ 424 = -0.7665094339622641
-0.7665094339622641 x 100 = -76.65%