-99.06% is the change from 427 to 4
Calculation steps:
[( 4 - 427 ) ÷ 427] x 100 = -99.06%
Formula
Percentage change = [(4 - 427) / 427] x 100
Subtract the new number by the original number
4 - 427 = -423
-423 ÷ 427 = -0.990632318501171
-0.990632318501171 x 100 = -99.06%