The actual sales volume is 125% of the plan, how much is the actual overfulfillment of the plan
实际销售额是计划的125%，实际比计划超额完成多少
<gadget id="calculator">125 / 100</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

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