The original price of a certain type of electronic dictionary is 360 yuan, but the current price is only 270 yuan. By what percentage?
某种型号的电子词典原价360元，现价只卖270元．降低了百分之几？
<gadget id="calculator">360 - 270</gadget>
<output>90</output>

<gadget id="calculator">90 / 360</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>