There are 50 students in the class, and 45 of them have reached the standard in physical exercise. What percentage of the total number of people in the class do not meet the standard?
全班50人，体育锻炼达标的有45人，未达标的人数占全班人数的百分之几？
<gadget id="calculator">50 - 45</gadget>
<output>5</output>

<gadget id="calculator">5 / 50</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>