July 7, 2020
[City], [State] [Zip Code]
I am notifying you in writing that it is necessary for me to terminate our rental agreement due to a lack of financial resources. These circumstances are directly due to the COVID-19 / Coronavirus outbreak and loss of income due to my employer closing their business permanently. I will be relocating on [Date] and would like to provide you my future address:
[Address], [City] [State] 
It is my understanding, based on the terms of the lease agreement dated on [00/00/00], that I will owe you rent payment for the two month period of [August and September] to complete our rental agreement. I can offer to make  equal monthly payments by check to resolve this outstanding balance due to you.
I appreciate your understanding during this difficult time. Please let me know anything further that you would like to discuss with me.