What’s my account’s return percentage?

I want to calculate my 7 year trade history P/L. It's amazing how you can't find this % return information anywhere (TD Ameritrade/thinkorswim, also used to use Robinhood)

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I'm assuming that I can somehow extract the Return on invested capital using my Account Statements. I'll probably need to use excel and extract data some how. Has anyone had any experience doing this?

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Any help or tips would be appreciated.