During the presidency of Bush his approval rating reached a high of around 85 % as he was close to 800 days in the office before beginning a continous downward slide that put him as low as 27,6 % by day 1308 of his presidency. While I would like to understand the general context that lead to this massive loss of approval over 500 days, I would like to focus on one timeframe in particular: At day 1007 his rating stood at 64,8 %, by day 1128 he was at 37,7 %, losing almost 30% in the span of 100 days. What was the cause?
Source: https://projects.fivethirtyeight.com/trump-approval-ratings/