The children's clothing factory originally cost 74.8 yuan to make a set of children's clothing, but now it is 22.44 yuan lower than the original cost. How much is the reduction?
儿童服装厂原来制作一套儿童服装的成本为74.8元，现在比原来成本降低了22.44元，降低了百分之几？
<gadget id="calculator">22.44 / 74.8</gadget>
<output>0.3</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">0.3 * 1</gadget>
<output>0.3</output>

<result>0.3</result>