A kind of clothing was originally priced at 200 yuan, but now it is sold at 160 yuan. How much is the reduction?
一种服装原来售价200元，现在降低到了160元出售，降低了百分之几？
<gadget id="calculator">200 - 160</gadget>
<output>40</output>

<gadget id="calculator">40 / 200</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>