Mac W. answered 06/09/19
We cannot calculate the exact percentile, because we do not know the exact distribution within 650-699 category. However, we can calculate a range of plausible percentile values. Since percentile is defined as the proportion below a given value, we know that AT LEAST 89% are below a 690 (10.8+14.5+17.3+17.5+13.5+8.3+4.2+1.8+1). Thus, the lowest plausible value for the percentile is 89th percentile.
The highest plausible value for the percentile would occur if all students in the 560-699 category (except for you) were actually below 690. Then the total percentage of everyone below you would be 95.3 (89+6.3).
Overall, then, we know that your percentile is somewhere between 89 and 95.3. Because 690 is closer to 699 than 650 (and because of the nature of a bell-shaped curve), it is likely that the percentile is closer to 95.3 than 89, but we do not know this for sure based on the information given.
ANSWER: somewhere between 89 and 95.3