Lianbang Computer Company sold 450 computers in May, which was 30 less than April. How many percent less?
连邦电脑公司五月份卖出电脑450台，比四月份少卖了30台，少卖了百分之几？
<gadget id="calculator">450 + 30</gadget>
<output>480</output>

<gadget id="calculator">30 / 480</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>