A certain agency used to have 160 staff members, but now it has 120 staff members. By how many percent has the current staff been reduced compared to the original staff?
某机关原来有工作人员160人，现在有工作人员120人，现在工作人员比原来工作人员精简了百分之几？
<gadget id="calculator">160 - 120</gadget>
<output>40</output>

<gadget id="calculator">40 / 160</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>