Shanqian Village planned to afforest 200 hectares, but actually afforested 250 hectares. What percentage did the actual afforestation increase?
山前村计划造林200公顷，实际造林250公顷，实际造林增加了百分之几？
<gadget id="calculator">250 - 200</gadget>
<output>50</output>

<gadget id="calculator">50 / 200</gadget>
<output>1/4 = around 0.25</output>

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