In 2009, the number of applicants for the national college entrance examination reached 10 million, a record high. In 2009, ordinary colleges and universities across the country plan to enroll 5 million students. How many percent is the number of students enrolled less than the number of applicants?
2009年全国高考报名人数达到1000万人，创历史最高记录．2009年全国普通高校计划招生500万人，招生人数比报名人数少百分之几？
<gadget id="calculator">1_000 - 500</gadget>
<output>500</output>

<gadget id="calculator">500 / 1_000</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>