and we back to this if some card has 0.75x performance of other one could wrongly think the other card is 25% faster but its 33%
There is no such thing:
Imagine a sustem with 100 Tflops. and other with 75 Tflops... The diference is 25%!
To calculate the percentage increase:
First:
work out the difference (increase) between the two numbers you are comparing.
Increase = New Number - Original Number
Increase = 100 - 75 = 25
Then:
divide the increase by the original number and multiply the answer by 100.
% increase = Increase ÷ Original Number × 100.
% increase = 25 ÷ 100 × 100. = 25
If your answer is a negative number, then this is a percentage decrease.
So lets change the order:
Increase = New Number - Original Number
Increase = 75 - 100 = .25
% increase = Increase ÷ Original Number × 100.
% increase = -25 ÷ 100 × 100. = -25
So there is a decrease of 25%...
That 33%, is the percentage over 75 that would be required to reach 100. That's 25 units or 33,333(3)% of 75.
By your calculations, PS5 and Xbox séries X would have 15,3% and 18,09% if we calculated decrease or increase (two values for basicaly the same thing)... But in reality the number is one and one only: 18.09%. diference either in increase or decrease.