What happened to 12.6% of my ETH involved in a transaction?

I have a Trezor Model T. The app has a “Swap” feature. I swapped ETH for ENJ today. I traded $637.80 of ETH, but I only got $548.80 of ENJ. There was an $8.54 fee. I have accounted for $557.34. What happened to the $80.46 of ETH that is unaccounted for? The Trezor section for ENJ has a “Transactions” view, and it shows these numbers. I downloaded the activity as a .csv file, and it shows the same numbers too.