-99.51% is the change from 204 to 1
Calculation steps:
[( 1 - 204 ) ÷ 204] x 100 = -99.51%
Formula
Percentage change = [(1 - 204) / 204] x 100
Subtract the new number by the original number
1 - 204 = -203
-203 ÷ 204 = -0.9950980392156863
-0.9950980392156863 x 100 = -99.51%