The closing price of a stock was 16 yuan yesterday, and today's closing price is 15.2 yuan. How many percent has it fallen?
一种股票昨天的收盘价16元，今天的收盘价15.2元，下跌了百分之几？
<gadget id="calculator">16 - 15.2</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 / 16</gadget>
<output>0.05</output>

<result>0.05</result>