A box plot is a representation of data in which we divide the data into 4 quarters. The five key features (five-number summary) are the minimum, lower quartile (Q1 - 25% of the data falls below this value), median (50% of the data falls below this value), upper quartile (Q3 - 75% of the data falls below this value) and the maximum. The interquartile range (IQR) is found by Q3 - Q1.

What percent of the data is represented by the box?