-98.03% is the change from 456 to 9
Calculation steps:
[( 9 - 456 ) ÷ 456] x 100 = -98.03%
Formula
Percentage change = [(9 - 456) / 456] x 100
Subtract the new number by the original number
9 - 456 = -447
-447 ÷ 456 = -0.9802631578947368
-0.9802631578947368 x 100 = -98.03%