-98.7% is the change from 231 to 3
Calculation steps:
[( 3 - 231 ) ÷ 231] x 100 = -98.7%
Formula
Percentage change = [(3 - 231) / 231] x 100
Subtract the new number by the original number
3 - 231 = -228
-228 ÷ 231 = -0.987012987012987
-0.987012987012987 x 100 = -98.7%