-98.02% is the change from 454 to 9
Calculation steps:
[( 9 - 454 ) ÷ 454] x 100 = -98.02%
Formula
Percentage change = [(9 - 454) / 454] x 100
Subtract the new number by the original number
9 - 454 = -445
-445 ÷ 454 = -0.9801762114537445
-0.9801762114537445 x 100 = -98.02%