-87.88% is the change from 231 to 28
Calculation steps:
[( 28 - 231 ) ÷ 231] x 100 = -87.88%
Formula
Percentage change = [(28 - 231) / 231] x 100
Subtract the new number by the original number
28 - 231 = -203
-203 ÷ 231 = -0.8787878787878788
-0.8787878787878788 x 100 = -87.88%
Example