How do I fix wrong titles?

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1

Now sure how I did this but I need a fix that doesnt include me manully chaning 100's of files by hand.

I used MP3tag to get album art for all my mp3 but alot of the Titles was chnaged..for example:

MP3tag now:
Filename- breakdown.mp3 and Title- Used To

What they should be is
Filename- breakdown.mp3 and Title- breakdown

2

"Convert > filename - tag"
with the format string %title%