-95.48% is the change from 420 to 19
Calculation steps:
[( 19 - 420 ) ÷ 420] x 100 = -95.48%
Formula
Percentage change = [(19 - 420) / 420] x 100
Subtract the new number by the original number
19 - 420 = -401
-401 ÷ 420 = -0.9547619047619048
-0.9547619047619048 x 100 = -95.48%