-42.54% is the change from 402 to 231
Calculation steps:
[( 231 - 402 ) ÷ 402] x 100 = -42.54%
Formula
Percentage change = [(231 - 402) / 402] x 100
Subtract the new number by the original number
231 - 402 = -171
-171 ÷ 402 = -0.4253731343283582
-0.4253731343283582 x 100 = -42.54%