The price of a certain stock the day before yesterday was 28 yuan. Yesterday it fell by 5% compared to the day before yesterday, and today it rose by 5% compared to yesterday. Compared with the day before yesterday, did it rise or fall? What percentage is the range?
某股票前天的价格是28元，昨天比前天下跌了5%，今天又比昨天上涨了5%，今天与前天相比，涨了还是跌了？幅度是百分之几？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">28 * (19/20) * (21/20)</gadget>
<output>2_793/100 = around 27.93</output>

<gadget id="calculator">28 - (2_793/100)</gadget>
<output>7/100 = around 0.07</output>

<gadget id="calculator">(7/100) / 28</gadget>
<output>1/400 = around 0.0025</output>

<result>1/400 = around 0.0025</result>