How to Analyze Change from Baseline: Absolute or Percentage Change？

between absolute change and percentage change more clearly: Two obese men A and B participate in a weight loss program. Their weights at the beginning of the program are 150 Kg and 100 Kg, respectively. When they –nish the program, the man A who weighs 150 Kg lost 15 Kg, while another man lost 10 ................
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