In order to speed up the pace of building a new countryside, Zhangjia Village planted 4,000 trees this year, 2,000 more than last year. What percentage is the tree planting this year compared to last year?
为加快新农村建设步伐，张家村今年植树4000棵，比去年多植2000棵，今年植树比去年增加百分之几？
<gadget id="calculator">4_000 - 2_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 / 2_000</gadget>
<output>1</output>

<result>1</result>