<s>[INST] A researcher conducts a study on the effectiveness of a new diet pill. The study includes 100 participants who are divided into two groups of 50. One group is given the diet pill, while the other group is given a placebo. The results show that 40% of the participants who received the diet pill lost weight, while 20% of the participants who received the placebo lost weight. What is the percentage of participants who lost weight in the diet pill group compared to the placebo group?[/INST]