It is planned to install 24 street lights in the park, but 30 are actually installed. How many percent is the actual increase compared to the plan?
公园里计划安装24盏路灯，实际安装30盏，实际比计划增加百分之几？
<gadget id="calculator">30 - 24</gadget>
<output>6</output>

<gadget id="calculator">6 / 24</gadget>
<output>1/4 = around 0.25</output>

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