-99.69% is the change from 318 to 1
Calculation steps:
[( 1 - 318 ) ÷ 318] x 100 = -99.69%
Formula
Percentage change = [(1 - 318) / 318] x 100
Subtract the new number by the original number
1 - 318 = -317
-317 ÷ 318 = -0.9968553459119497
-0.9968553459119497 x 100 = -99.69%