<image>In the 2009 CCTV Chinese New Year's Gala, the skit "No Problem" starring Zhao Benshan, Xiao Shenyang, and others received unanimous praise. The online voting rate also increased steadily, from 25% on the first day to 50% on the third day. What is the average daily growth rate ___ %? (Keep two significant figures,  ≈ 1.4142)