-41.18% is the change from 391 to 230
Calculation steps:
[( 230 - 391 ) ÷ 391] x 100 = -41.18%
Formula
Percentage change = [(230 - 391) / 391] x 100
Subtract the new number by the original number
230 - 391 = -161
-161 ÷ 391 = -0.4117647058823529
-0.4117647058823529 x 100 = -41.18%