The graph below shows the percentage sales of trainers made by a sportwear company in one year. The Flying Boots trainers were lunched at the beginning of that year.

The given column graph illustrates the data regarding the percentage of four different trainers sold by a company over a period of 12 months. Overall, it is apparent that Golden feet products were in high demand throughout the year. While, the newly introduced range of Flying boots had a considerably impact over the period. On analysis, it can be seen that, High rollers series was the least popular. At the first quarter, the sales figure was 20% but dropped to 10% and 5% respectively in second and third quarter respectively. Similarly, Zed runner sales declined significantly during the year, from 30% in the first quarter to roughly 10% in the fourth. Furthermore, the Golden feet sold the most of any product. From the first to the third quarter, the figure was 35%, which dramatically increased to half of total sales in the last quarter. Finally, Flying boots, which had the lowest statistics at the start of the period of 15%, grew considerably to 35% by the conclusion. Interestingly, Golden Feet and Flying Boots together accounted for 80% of the company's overall revenues in the last quarter.