-41.13% is the change from 231 to 136
Calculation steps:
[( 136 - 231 ) ÷ 231] x 100 = -41.13%
Formula
Percentage change = [(136 - 231) / 231] x 100
Subtract the new number by the original number
136 - 231 = -95
-95 ÷ 231 = -0.41125541125541126
-0.41125541125541126 x 100 = -41.13%