The given pie charts below gives us information about five different genre of books sold by the same bookseller in three different years.
Overall, it is clear that, the number of adult fiction readers have increased drastically while the total percentage of books sold for biography genre decreased with the passage of time.
In the year 1972, three genres ( Adult fiction, Children’s fiction and Biography) book remained almost same which is 20%. However, the total selling of books related to other topics remained near a quarter. In the year there can be seen a rise of 5% in the selling of Adult fiction books which then peaked at 45% in the year 2012. The percentage for Biography related books decreased 5% in the next 20 years and then dropped to 8% in the year 2012.
The percentage for Children’s fiction increased only 5% over the course of 40 years while others decreased to 12% over the same period. The percentage of travelling books fluctuated and stopped at in total of 10% with the passage of time.