-49.22% is the change from 835 to 424
Calculation steps:
[( 424 - 835 ) ÷ 835] x 100 = -49.22%
Formula
Percentage change = [(424 - 835) / 835] x 100
Subtract the new number by the original number
424 - 835 = -411
-411 ÷ 835 = -0.49221556886227547
-0.49221556886227547 x 100 = -49.22%