-41.37% is the change from 394 to 231
Calculation steps:
[( 231 - 394 ) ÷ 394] x 100 = -41.37%
Formula
Percentage change = [(231 - 394) / 394] x 100
Subtract the new number by the original number
231 - 394 = -163
-163 ÷ 394 = -0.4137055837563452
-0.4137055837563452 x 100 = -41.37%