-99.69% is the change from 323 to 1
Calculation steps:
[( 1 - 323 ) ÷ 323] x 100 = -99.69%
Formula
Percentage change = [(1 - 323) / 323] x 100
Subtract the new number by the original number
1 - 323 = -322
-322 ÷ 323 = -0.9969040247678018
-0.9969040247678018 x 100 = -99.69%