-98.36% is the change from 428 to 7
Calculation steps:
[( 7 - 428 ) ÷ 428] x 100 = -98.36%
Formula
Percentage change = [(7 - 428) / 428] x 100
Subtract the new number by the original number
7 - 428 = -421
-421 ÷ 428 = -0.9836448598130841
-0.9836448598130841 x 100 = -98.36%