-30.92% is the change from 608 to 420
Calculation steps:
[( 420 - 608 ) ÷ 608] x 100 = -30.92%
Formula
Percentage change = [(420 - 608) / 608] x 100
Subtract the new number by the original number
420 - 608 = -188
-188 ÷ 608 = -0.3092105263157895
-0.3092105263157895 x 100 = -30.92%