-35.5% is the change from 231 to 149
Calculation steps:
[( 149 - 231 ) ÷ 231] x 100 = -35.5%
Formula
Percentage change = [(149 - 231) / 231] x 100
Subtract the new number by the original number
149 - 231 = -82
-82 ÷ 231 = -0.354978354978355
-0.354978354978355 x 100 = -35.5%