The current cost per piece of a certain product is 122.25 yuan, which is 27.75 yuan lower than before. How much is the current cost per piece lower than before?
某种产品现在每件成本是122.25元，比原来降低了27.75元，现在每件成本比原来降低了百分之几？
<gadget id="calculator">122.25 + 27.75</gadget>
<output>150</output>

<gadget id="calculator">27.75 / 150</gadget>
<output>0.185</output>

<result>0.185</result>