-90.09% is the change from 424 to 42
Calculation steps:
[( 42 - 424 ) ÷ 424] x 100 = -90.09%
Formula
Percentage change = [(42 - 424) / 424] x 100
Subtract the new number by the original number
42 - 424 = -382
-382 ÷ 424 = -0.9009433962264151
-0.9009433962264151 x 100 = -90.09%