There are 500 elderly people in a certain village, only 25 of them do not participate in endowment insurance. What percentage of the total number of elderly people participate in insurance?
某村有500位老人，只有25人没有参加养老保险，参加保险的人数占老人总数的百分之几？
<gadget id="calculator">500 - 25</gadget>
<output>475</output>

<gadget id="calculator">475 / 500</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>