A forest farm actually reforested 20 hectares last year, which was 4 hectares more than the planned afforestation. What percentage was the actual afforestation more than the plan?
某林场去年实际造林20公顷比计划造林多4公顷，实际比计划多造林百分之几？
<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<gadget id="calculator">4 / 16</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/4) * 1</gadget>
<output>1/4 = around 0.25</output>

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