-43.1% is the change from 420 to 239
Calculation steps:
[( 239 - 420 ) ÷ 420] x 100 = -43.1%
Formula
Percentage change = [(239 - 420) / 420] x 100
Subtract the new number by the original number
239 - 420 = -181
-181 ÷ 420 = -0.430952380952381
-0.430952380952381 x 100 = -43.1%