The All Measures chart is a snapshot of your overall performance across three different time periods: the past 7 days, the past 28 days & the past 90 days. This offers a direct comparison between the two immediately preceding sets of data for each period. 

Using the cog icon you can select the measure displayed choosing from Rating Score, Transaction Value or truSegment. 

The table offers a quick way to measure whether performance has improved or fallen with the percentage ratio giving an actual indication of this across each of the three time periods.