This information can be found directly on the charts page in the summary section beneath the displayed chart. The number to the left, in black, is the value associated with your specific video. The number to the right, in light grey, is the value of the norm. 

The small arrow to the right of your video's value indicates whether your video performs significantly different from the selected norm. If the arrow is pointing upwards, your video performed significantly better than the norm. If the arrow is pointing downwards, your video performed significantly worse. A confidence interval of 95% is used for these statistical tests.