-88.57% is the change from 420 to 48
Calculation steps:
[( 48 - 420 ) ÷ 420] x 100 = -88.57%
Formula
Percentage change = [(48 - 420) / 420] x 100
Subtract the new number by the original number
48 - 420 = -372
-372 ÷ 420 = -0.8857142857142857
-0.8857142857142857 x 100 = -88.57%