SYMPTOM:
Tooltips on Pareto chart for a percentage line metric is displaying incorrect value and is not inheriting value formatting in Strategy 9.x when placed in a Report Services Document. In detail, the issues are:
Below is an example of the issues when tooltip is using the {&value} auto-text:

CAUSE:
This is a known issue in Strategy.
ACTION:
Contact Strategy Technical Support for an update on this issue.