Answer:
Their performance got better, as they scored at least one goal in a higher percentage of matches.
Explanation:
Last year:
The team scored at least one goal in 65% of their matches.
This year:
This year they played 40 matches and scored at least one goal in 28 of them. So
28*100%/40 = 0.7*100% = 70%
This year the team scored at least one goal in 70% of their matches, which is a higher percentage(5% higher) than last year.
Has their performance got better or worse?
Their performance got better, as they scored at least one goal in a higher percentage of matches.