-98.28% is the change from 408 to 7
Calculation steps:
[( 7 - 408 ) ÷ 408] x 100 = -98.28%
Formula
Percentage change = [(7 - 408) / 408] x 100
Subtract the new number by the original number
7 - 408 = -401
-401 ÷ 408 = -0.9828431372549019
-0.9828431372549019 x 100 = -98.28%