The charts below show the percentage of five kind of books sold by a bookseller between 1972 and 2012 Where is the information by selecting and reporting Feature and make comparison where relevant

The pie charts give information about the selling of different types of books in 1970, 1992 and 2012. The data is in percentage.
Overall, it is seen clearly from the graphs, the adult fiction type of book was the most popular in the last years.
Looking at the chart in more detail, it is evident that the amount of travel book which sold increased from 15 % in 1972 to 18% in 1992. The selling ratio of adult and children's fiction book was the same at 20% in 1972, but that number rose and reached 25% and 22% respectively in 1992. In contrast, the percentage of biography book, which sold declined from 20% in 1972 to 15% in 1992.
Turning to the remaining data, 10% of books were travel book which sold in 2012. The sale ratio of children's and adult fiction books was 25% and 45%, respectively. The selling of biography books was 8% in 2012, 12% of the book was the other category book.