To find the overall change in the stock's value, we need to consider both changes:
- The first change was –1 point.
- The second change was –5 points.
To calculate the total change, we can sum these two changes:
\[ -1 + (-5) = -1 - 5 = -6 \]
Thus, the total change in the stock's value is –6 points.
This means that the stock lost a total of 6 points over the two days.