Last year, the output value of Hongguang Machinery Factory was 2.5 million yuan. This year, the output value is planned to increase to 3 million yuan. What percentage is the planned increase in this year's output value compared with last year?
红光机械厂去年产值250万元，今年产值计划增加到300万元，今年计划产值比去年增加百分之几？
<gadget id="calculator">300 - 250</gadget>
<output>50</output>

<gadget id="calculator">50 / 250</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>