-99.7% is the change from 333 to 1
Calculation steps:
[( 1 - 333 ) ÷ 333] x 100 = -99.7%
Formula
Percentage change = [(1 - 333) / 333] x 100
Subtract the new number by the original number
1 - 333 = -332
-332 ÷ 333 = -0.996996996996997
-0.996996996996997 x 100 = -99.7%