Final answer:
The student's question about calculating body fat percentage is missing specific details needed for precise calculation. Generally, to calculate body fat percentage, the weight of fat lost is subtracted from total fat, and the new fat weight is divided by the new total body weight.
Step-by-step explanation:
It appears that the student's question might be missing some information regarding the calculation of percentage body fat loss, as it references a 'previous question' that is not provided here. However, assuming the student wants to understand how to calculate body fat percentage, in general, you would need the individual's total body weight and the weight of the fat being lost.
For example, if a person weighs 180 pounds and has 16% body fat, they have 28.8 pounds of fat (because 0.16 x 180 = 28.8). If they lose a certain amount of fat, you subtract that from the original amount and then recalculate the percentage using their new total body weight.
Body Fat Percentage is a measure of fitness level, since it is the only body measurement which directly calculates a person's relative body composition without regard to height or weight.