The output value of a certain factory last year was 1 million yuan, an increase of 200,000 yuan over the plan. What percentage is the actual increase in production compared with the plan?
某厂去年产值100万元，比计划增产20万元．实际比计划增产百分之几？
<gadget id="calculator">20 / 80</gadget>
<output>1/4 = around 0.25</output>

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