Updated!
With the 11 TPE added, his totals before regression were 967 TPE and 32 TPE banked. His regression total would be 967 * .25 = 241.75 which rounds down to 241. With 210 TPE removed from the attributes, this would leave 31 TPE to be removed from his bank, so he would actually be left with 1 banked TPE after this regression. And his new TPE total would be 726.
With the 11 TPE added, his totals before regression were 967 TPE and 32 TPE banked. His regression total would be 967 * .25 = 241.75 which rounds down to 241. With 210 TPE removed from the attributes, this would leave 31 TPE to be removed from his bank, so he would actually be left with 1 banked TPE after this regression. And his new TPE total would be 726.