-88.81% is the change from 420 to 47
Calculation steps:
[( 47 - 420 ) ÷ 420] x 100 = -88.81%
Formula
Percentage change = [(47 - 420) / 420] x 100
Subtract the new number by the original number
47 - 420 = -373
-373 ÷ 420 = -0.888095238095238
-0.888095238095238 x 100 = -88.81%