-57.21% is the change from 998 to 427
Calculation steps:
[( 427 - 998 ) ÷ 998] x 100 = -57.21%
Formula
Percentage change = [(427 - 998) / 998] x 100
Subtract the new number by the original number
427 - 998 = -571
-571 ÷ 998 = -0.5721442885771543
-0.5721442885771543 x 100 = -57.21%