The bar chart shows the percentage of small medium large companies which used social media for business purposes between 2012 to 2016

The given bar chart depicts the proportion of UK businesses that maintained a social media presence between 2012 and 2016.
In general, it is noticeable that the percentage of these companies showed a parallel increase in the given period. Additionally, large enterprises were the most dominant social media users out of three types of businesses.
Giving a closer look at the graph, it could be seen that from 2012 to 2014 saw a remarkable upward trend in social media utilization of small and medium companies. Specifically, in 2012, small businesses began at just under 30% then slightly rose to 35% approximately by 2014. A similar pattern was evident in medium businesses which also began at 30% and reached 50% two years later. However, both of these types of companies followed a downward trend right back in 2015, but the trend would continue to increase until the end of the given period, marking a 50% recovery in 2016.
By contrast, large enterprises dominated social media usage as they accounted for the highest proportions, just under 80% from 2012 to 2016, then saw a significant drop in 2015 when the percentage fell to around 50%.