Percentage uncertainty over 100

Hi, I'm supposed to calculate the percentage uncertainty of the resistance R
by the equation

R=(4 x density^2)/(pi x diameter^2)

The problem is that the percentage uncertainty of density is 71%.
So if I want to calculate the percentage uncertainty of R, I would have to double the percentage uncertainty of density which would give me 142%

In this case, do I just discard the percentage uncertainty of density when I calculate the percentage uncertainty of the resistance?