Shanghai Garment Factory planned to produce 24,000 sets of garments last year, but actually produced 27,600 sets. What percentage is the actual increase over the plan?
上海服装厂去年计划生产服装2.4万套，实际生产了2.76万套．实际比计划增加百分之几？
<gadget id="calculator">2.76 - 2.4</gadget>
<output>0.36</output>

<gadget id="calculator">0.36 / 2.4</gadget>
<output>0.15</output>

<result>0.15</result>