List only, do not count: the school library has 350 science books and 400 story books, how many percent are the number of science books less than the story books?
只列式，不计算：学校图书馆有科技书350本，故事书400本，科技书的本数比故事书少百分之几？
<gadget id="calculator">400 - 350</gadget>
<output>50</output>

<gadget id="calculator">50 / 400</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>