The original price of a sweater is 85 yuan, but the current price is 68 yuan. How much is the current price lower than the original price?
一件毛衣的原价是85元，现价是68元．现价比原价降低了百分之几？
<gadget id="calculator">85 - 68</gadget>
<output>17</output>

<gadget id="calculator">17 / 85</gadget>
<output>1/5 = around 0.2</output>

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