The original price of a product is 80 yuan, and the current price is 58 yuan. What is the price reduction rate of this product?
一件商品原价80元，现价58元，这件商品的降价幅度是百分之多少？
<gadget id="calculator">80 - 58</gadget>
<output>22</output>

<gadget id="calculator">22 / 80</gadget>
<output>11/40 = around 0.275</output>

<result>11/40 = around 0.275</result>