-99.07% is the change from 428 to 4
Calculation steps:
[( 4 - 428 ) ÷ 428] x 100 = -99.07%
Formula
Percentage change = [(4 - 428) / 428] x 100
Subtract the new number by the original number
4 - 428 = -424
-424 ÷ 428 = -0.9906542056074766
-0.9906542056074766 x 100 = -99.07%