The charts illustrate the proportion of different types of film viewers in a movie theatre in 2008 and 2012. Overall, there were noticeable changes in audience preferences over the four-year period.
In 2008, action films were the most popular, attracting 29% of viewers, followed by thrillers (14%), comedies (16%), and romance (not given in your data for 2008 but implied lower than 16%). Drama was the least popular, accounting for only 5% of viewers.
By 2012, audience preferences had shifted. Romance became the most popular genre, watched by 22% of viewers, followed closely by comedy at 21% and action at 23%, which saw a decline from 2008. Sci-fi emerged as a significant category, capturing 19% of the audience, while thrillers decreased to 8%, and drama slightly increased (exact percentage not provided in your 2012 data).
In comparison, the popularity of thrillers dropped markedly, while romance, comedy, and sci-fi gained a larger audience. Action films, although still popular, experienced a decline. Drama remained relatively minor in comparison to other genres.