牛人来帮我解决个英语长难句that means a higher proportion os what is in th

牛人来帮我解决个英语长难句
that means a higher proportion os what is in the sea is being caught,so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes.
recorded by changes in catch sizes该怎么翻译?
是“捕鱼量所记录的变化”还是“捕鱼量的变化所记录的”