-99.78% is the change from 454 to 1
Calculation steps:
[( 1 - 454 ) ÷ 454] x 100 = -99.78%
Formula
Percentage change = [(1 - 454) / 454] x 100
Subtract the new number by the original number
1 - 454 = -453
-453 ÷ 454 = -0.9977973568281938
-0.9977973568281938 x 100 = -99.78%