-30.41% is the change from 605 to 421
Calculation steps:
[( 421 - 605 ) ÷ 605] x 100 = -30.41%
Formula
Percentage change = [(421 - 605) / 605] x 100
Subtract the new number by the original number
421 - 605 = -184
-184 ÷ 605 = -0.30413223140495865
-0.30413223140495865 x 100 = -30.41%