-14.29% is the change from 231 to 198
Calculation steps:
[( 198 - 231 ) ÷ 231] x 100 = -14.29%
Formula
Percentage change = [(198 - 231) / 231] x 100
Subtract the new number by the original number
198 - 231 = -33
-33 ÷ 231 = -0.14285714285714285
-0.14285714285714285 x 100 = -14.29%