-30.18% is the change from 603 to 421
Calculation steps:
[( 421 - 603 ) ÷ 603] x 100 = -30.18%
Formula
Percentage change = [(421 - 603) / 603] x 100
Subtract the new number by the original number
421 - 603 = -182
-182 ÷ 603 = -0.3018242122719735
-0.3018242122719735 x 100 = -30.18%