An ideal gas has the following initial conditions vi 525

Question

Problem: An ideal gas has the following initial conditions: Vi = 525 cm³, Pi = 3 atm, and Ti = 100°C.

Part A: What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm³? Celcius

I need help to find its final temperature if the pressure is reduced.