-99.57% is the change from 231 to 1
Calculation steps:
[( 1 - 231 ) ÷ 231] x 100 = -99.57%
Formula
Percentage change = [(1 - 231) / 231] x 100
Subtract the new number by the original number
1 - 231 = -230
-230 ÷ 231 = -0.9956709956709957
-0.9956709956709957 x 100 = -99.57%