The original price of a pair of men's leather shoes is 250 yuan, but now the price is 170 yuan. How much is the price reduction?
一双男式皮鞋原售价是250元，现在售价是170元，降价百分之几？
<gadget id="calculator">250 - 170</gadget>
<output>80</output>

<gadget id="calculator">80 / 250</gadget>
<output>8/25 = around 0.32</output>

<result>8/25 = around 0.32</result>