Hi, I need some exact information about the HUD popup because I dont really get something in here

here's the stat picture

after this guy did a 3bet from MP, his popup stats changed to MP 33% (3). how is that possible that first it was 0% (2) then 33% (3) ? what the number in the bracket means ? Number of 3bets ? then something is very wrong here, and I dont understand what the numbers mean afterall. by 3bet HEM means, preflop reraise, ex: utg raise 3bb, Hero (MP) raise 9bb, this is a 3bet. then what are those percentages ? if anyone knows exactly please reply here.

ye and also, the guy has 66 hands, his 3bet % is 10.5, then why it says 11% (19). how can 11% of 66 be 19 ? it has to be 6 3bets, not 19.