How to Make Calculated Rating Map to Correct Grid

Summary:

We have a range of calculated rating to map to 4-point scale. The calculated rating is being calculated correctly. However, the calculated rating is not mapping to the correct grid. How can we achieve this?

Content (required):

The Performance Rating Grid to be achieved is as follows:

The weighted score is calculated as:

SUM {(Goal_1 weightage * Manual Rating), (Goal_2 weightage * Manual Rating), … (Goal_N weightage * Manual Rating)}

The above calculation is working correctly. However, the mapping of the calculated rating (weighted score) to the Grid is not working.

For an example, if the calculated Rating is 2.7, as per the Grid mapping, this rating must fall under the Grid “2- On Target”. Instead, it is incorrectly showing as “3- Excellent”.