Usage patterns
全体的に〈動詞〉overall, ~ (used adverbially before a verb to summarize a change or state)
Overall, this year's sales increased.
全体的な〈事〉an overall (impression, trend, tendency, etc.)
The overall impression was very good.
全体的に見てlooking at the whole picture; taking everything into account
Looking at the whole picture, this plan can be said to have been a success.