Angela Merkel has said: “If I want, you will read in tomorrow’s newspapers that 98% of the population is happy with my policies.”
Angelma Merkel hasn't said so. The small print in the picture says "In (Satira) Veritas Uwe Ostertag”. The author is Uwe Ostertag. According to Correctiv, he is a "professional troll".
Further debunking: correctiv.org/echtjetzt/artikel/2017/09/06/fake-news-tiefer-geht-immer/