The winery originally planned to produce 320 tons of wine, but actually produced 400 tons of wine. How many percent more than the original plan?
酒厂原计划产酒320吨，实际产酒400吨，实际比原计划多产百分之几？
<gadget id="calculator">400 - 320</gadget>
<output>80</output>

<gadget id="calculator">80 / 320</gadget>
<output>1/4 = around 0.25</output>

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