-97.85% is the change from 418 to 9
Calculation steps:
[( 9 - 418 ) ÷ 418] x 100 = -97.85%
Formula
Percentage change = [(9 - 418) / 418] x 100
Subtract the new number by the original number
9 - 418 = -409
-409 ÷ 418 = -0.9784688995215312
-0.9784688995215312 x 100 = -97.85%