I did the calculations myself.Where do you find the numbers used for this calculation ?
PS5 30% $399 + 70% $499
If the 30% is smaller then it is even more than 341%.
BTW you have the units here:
Q4 2020 = 1.4m x $299 = $418.6m
Q4 2021 = 1.0m x $299 + 0.99m x $399 + 2.31m x $499 = $1846.7m
$1846.7m / $418.6m = 441% = 341% increase
DE > 30% (not likely) = less than 341%
DE < 30% (very likely) = more than 341%
PS. And about promotion and deals... well PS5 is basically being sold at full price and PS4 get very little promo/deals... I don't believe it will make that much difference for Q4 (there is not Black Friday or something like)... the changes to have PS4 promo/deals are bigger than PS5 that will make the % bigger than 341%.
Edit - Fixed the %.