The adjusted close was 4.76 from 1.36, not 5.32. Using your impact, and I like your impact one has 3.45/4.76, or 27.5% or some where between our two numbers.
The drop using closing prices the next and following 2 days were 3.45 (the number you use) and 3.37. Using the lowest close the short term haircut was a little more than 29%. If one uses the intraday lowest of 3.13 the maximum shave for someone who might have panic sold is ~35%.
When I talk about nasty drops of 50% to 75% I'm talking about drops followed by slow recovery if any at all. Traders looking for opportunities did have a chance to buy at a 30 to 35 percent discount, but for most of us holding long I think it's much fairer to look at closing prices and how quickly those closes fully recovered.
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