Last year, the chance was 75% that we drafted second, which they increased to 80% this year.
So, since they are independent draws, the chance that such a team would draft second twice is:
(.75)(.80) = 0.60
60%
ETA: 35% chance of drafting first once and 5% chance of winning both lotteries. And, no, losing last year does not affect the odds this year, so conditional on losing it last year, the probability of losing both is 80%.