with 复合结构

Chinas floating population contains many young people with those born after 1980 accounting for 56.5% of the total. 中国流动人口中青年较多，八零后占总流动人口的56.5%。

with 开始后半句看不清结构了，是with 复合结构吗？

Chinas floating population contains many young people with those born after 1980 accounting for 56.5% of the total.

with those born after 1980 accounting for 56.5% of the total.确实是with复合结构。其中those born after 1980为with的宾语，accounting for 56.5% of the total为目前分词短语作宾补。with复合结构在句中作随着状语。