In the test report, you will be able to find that some of the answer’s distribution analysis shows the total percentage is not 100% as in the image below.
For Q2, the total percentage is 101%, which is greater than 100%. This is because the percentage shown on TalentLMS is rounded, the 7% shown in the reports is actually represent 6.7% (3 answered/45).
While for Q3, the total percentage is 98% which is smaller than 98%. The percentage shown is only 98% is due to one user didn't answer the question. You may refer to and download the individual submission report to check on the user.