Thermodynamics - heat transfer

[urgent]

Homework Statement

if the temperature of an object changes from 80 to 433 degrees Celsius, but the area and emissivity remains constant, by how much does radiated power increase?

Homework Equations

P=phi*A*e*T^4

The Attempt at a Solution

i tried to do this:
80^4-433^4. and get the temperature change...but i do not know where to go from here, please if someone could give good explanation about this, i got an exam in 2 days=/..thanks!=]

 

[rock.freak667]

So the change is E=εA(T₂⁴-T₁⁴) (remember to change the temperatures to Kelvin).

Originally the power was E=εAT₁⁴

So what is the ratio of the change in power to the original power?

 

[urgent]

so i did this:
706^4 - 353^4
=2.329*10^11
um now how do i find the ratio of the change from this?

 

[rock.freak667]

so i did this:
706^4 - 353^4
=2.329*10^11
um now how do i find the ratio of the change from this?

So you have ΔE= εA(2.239x10¹¹)

Initially E = εAT₁⁴

So get E and just find ΔE/E