The charts below show the differences in how people in 3 countries learned English in 2010 and 2015

The pie charts illustrate the proportion of how citizens learning English in different countries in 2010 and 2015.
Overall, it is clear that all three ways to study English employed in all given countries except for going abroad of country C in 2010. In addition, the evening class was the most using technique that the countries prefer.
In 2010, 94% of people in Country C studied English through classes in the evening, followed by country B and C ( 72% and 70%, respectively). In the next five years, however, the countries witnessed a decreased trend in which country B experienced the most decline at 25%.
The figures for studying online are relatively similar between nations in 2010 (5%, 6%, and 8%, respectively). Country B, in 2015, saw a significant increase of 24% that doubled the percentage of country C and tripled that of country C.
English learning overseas was quite different between countries. While there was no one in Country C choosing foreign nations to pursue English studying, until 2015, more than 20% of the other ones applied this way in 2010. However, in 2015, the figure of country A fell by 5%, whereas that of country B remained unchanged.