Profitability of cloud mining is dependent on 2 major factors...

1. At what rate you are buying per Ghs

2. At what rate difficulty is going up

Knowing these 2 factors, u may calculate the rest at any of the following links...

i. www.cloudmining.website/calculator.php

ii. www.alloscomp.com/bitcoin/calculator

iii. www.bitcoinwisdom.com/bitcoin/difficulty