The box-and-whisker plot below represents some data set. What percentage of the data values are between 69 and 72?

Looking at the figure
we have that
Minimum=67
Q1=69
Median=72
Q3=74
Maximum=76
Remember that
Q1 ----> represent 25%
Median ----> represent 50%
The percentage is between 25% and 50%
therefore
50%-25%=25%