Market price - sale price ,,
<p> <span class="math-editor mathquill-rendered-math"><span class="fraction non-leaf"><span class="numerator"><var>L</var><var>o</var><var>s</var><var>s</var></span><span class="denominator"><var>c</var><span class="binary-operator">·</span><var>p</var></span><span style="display: inline-block; width: 0;" data-mce-style="display: inline-block; width: 0;"> </span></span><span class="binary-operator">×</span>100<span class="nonSymbola">%</span></span> </p> ,,
S.P -C.P,,
C.P - S.P ,,
<p>&nbsp;<span class="math-editor mathquill-rendered-math"><span class="fraction non-leaf"><span class="numerator"><var>profit﻿</var></span><span class="denominator"><var>C</var><span class="binary-operator">·</span><var>P</var></span><span style="display: inline-block; width: 0;" data-mce-style="display: inline-block; width: 0;">&nbsp;</span></span><span class="binary-operator">×</span>100<span class="nonSymbola">%</span></span>&nbsp;</p>