25-29.9 is the usual range for “overweight, but not obese” in the US and Germany (so probably the rest of Europe, too); I remember my hotel room scale in Korea showing 23 as the start of overweight, so I guess the ranges in that study are more commonly used across Asia - the study was done on Singaporeans.
> 44.5% (98/220) of the participants were overweight (BMI 23.0-27.5 kg/m2) and 49.5% (109/220) were obese (BMI > 27.5 kg/m2)