-57.75% is the change from 994 to 420
Calculation steps:
[( 420 - 994 ) ÷ 994] x 100 = -57.75%
Formula
Percentage change = [(420 - 994) / 994] x 100
Subtract the new number by the original number
420 - 994 = -574
-574 ÷ 994 = -0.5774647887323944
-0.5774647887323944 x 100 = -57.75%