Select the average score as standard, and record it as 0, with excess as positive and deficiency as negative.

Then Sean got 9 1, which exceeded the average score of 9 1-87=4 and was recorded as +4.

Fang Kun scored 82 points, which was lower than the average score of 87-82=5 points, and was recorded as -5 points.

Liu Jun scored 95 points, which exceeded the average score of 95-87=8 points and was recorded as +8 points.

So the answer is: -5 points, +8 points.