-18.7% is the change from 230 to 187
Calculation steps:
[( 187 - 230 ) ÷ 230] x 100 = -18.7%
Formula
Percentage change = [(187 - 230) / 230] x 100
Subtract the new number by the original number
187 - 230 = -43
-43 ÷ 230 = -0.18695652173913044
-0.18695652173913044 x 100 = -18.7%