To calculate the overall percentage, we'll compute the weighted average of the scores. Assuming all tasks have equal weight unless stated otherwise, the calculation will simply be the average of all the percentages.

Steps:

1. List all the percentages:
   $100, 100, 94, 100, 92, 94, 100, 100, 98, 100, 92, 92, 96.2, 91.4, 90, 80, 88.36$

2. Add them together:
   $100 + 100 + 94 + 100 + 92 + 94 + 100 + 100 + 98 + 100 + 92 + 92 + 96.2 + 91.4 + 90 + 80 + 88.36 = 1419.96$

3. Count the number of items:
   There are $17$ scores.

4. Divide the total by the number of items to find the average:
   $\text{Average Percentage} = \frac{1419.96}{17} \approx 83.53\%$

Final Overall Percentage:

83.53%

Would you like to clarify weightage or any specific details?

Here are 5 related questions for further understanding:

1. Should any assignments carry more weight than others?
2. Do you need an analysis of improvement across chapters?
3. Would you like a breakdown of scores by performance categories (e.g., above 90%)?
4. Are there any incomplete or missing scores that need to be accounted for?
5. Should we project the potential final grade based on expected scores?

Tip: When calculating percentages for weighted tasks, always ensure weights are explicitly stated to get accurate results.