the pie chart shows the devices people in the 18 to 25 age group use to watch television in a European country.

The given pie graphs compare the principle methods to watch TV of group people who are from 18 to 25 years old in a European country for the years 2007 and 2017. Overall, it can be seen broadly about the opposite trends both significant and minor. One dominant feature of this data is that, while in 2007 just 15% of people use mobile phone for watching television, in 2017 the figure nearly accounts for over a quarter, at 26%. It is apparent that tablet and flat-screen TV uses in that year are roughly four times the 2007 figure, with 19% and 27%, respectively. Three means make up the largest proportion of total used demand, however, there is an opposition in other ones for the same purpose. The figure of using laptop and desktop computer is fell down to the same rate - twelve percent. Remarkably, viewing television by conventional TV in 2017 is seen a very slow level of 18-to 25-years-olds people despite accounting for almost a third of the total in 2007, at 34 percent. In conclusion, it can be said that the changes of used demand for viewing television purpose during that decade, with the lowest percent comes from conventional TV use.