-30.53% is the change from 606 to 421
Calculation steps:
[( 421 - 606 ) ÷ 606] x 100 = -30.53%
Formula
Percentage change = [(421 - 606) / 606] x 100
Subtract the new number by the original number
421 - 606 = -185
-185 ÷ 606 = -0.30528052805280526
-0.30528052805280526 x 100 = -30.53%