Guangming Primary School had 24 basketballs last year, and bought 6 new ones this year. What percentage is the increase this year compared to last year?
光明小学去年有篮球24个，今年新买了6个，今年比去年增加了百分之几？
<gadget id="calculator">6 / 24</gadget>
<output>1/4 = around 0.25</output>

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