80 % DOWN DAYS CHART http://c.stockcharts.com/c-sc/sc?s=%24SPX&p=D&yr=0&mn=6&dy=0&i=p69201370338&a=718008139&r=929 90 % DOWN DAYS for SPX MID SML http://stockcharts.com/articles/arthurhill/2020/02/another-triple-90-down-day-wha-591.html