Complex sentence: A 2009 internet survey in Japan indicated 70.2% of respondents like Natto and 29.8% do not, but out of 29.8% who dislike Natto, about half of them eat natto for its health benefits.
Split into simpler sentences: A 2009 internet survey in Japan indicated 70.2% of respondents like Natto and 29.8% do not. But out of 29.8% who dislike Natto, about half of them eat natto for its health benefits.