Assume
1. 60% or above is great.
1. 50%-59.9% is very good.
2. 40-49.9% is "average" (and I say that because I think 40% is not very good and 49% would be very good).
3. 30-39.9% is bad.
4. Under 29.9% is abysmal.
Hayward this season
1. Great = 4
2. Very good = 8
3. Average = 11
4. Bad = 12
5. Abysmal = 12
TBH, 40% average is at the very low end of acceptable. Compared against the "qualifying" SG's (those on pace for 300 or more made FG's), Hayward is 27th. Only J.R. Smith is worse. If you look at SF's, all 17 listed at the position have higher shooting percentages than Hayward.
Whichever way you slice and dice, Gordon is having the worst year of his career in a season in which there is huge motivation to perform at a top level. Pressure of trying to do too much? Perhaps. But if he wants to be paid at the level of an all-star, he should be performing at the level of an all-star level.