The first of these numbers is Payout Percent - how much profit you make on a successful trade. This one is readily available from your broker, and usually ranges from 60% to 80%
The second is more difficult to quantify - your prediction accuracy. It is how accurately you are able to predict a trade's results. For example, 100% would mean never failing, 50% would indicate that you might as well be guessing, and 80% means you get 4 out of 5 trades correct.
To calculate your prediction accuracy, take your trade history and divide total wins by total overall trades. If you don't have a history, then set up a demo account somewhere and experiment, trust me you want to compare to actual numbers not just randomly guesstimate you accuracy (a 5% difference in predication accuracy is the difference between really risky trading and mostly safe trading).
Calculating Binary Trading Risk
This table shows that even a highly accurate indicator coupled with a high payout still entails some risk. I can't tell you what level of risk is good for you, but at least with this you can make better informed decisions. Interestingly the larger your initial balance the less risk of losing everything (not shown here), this is because at least a few of the high accuracy simulated traders had runs of bad luck early on and ran out of cash thus introducing some bias.
Average Return Per Trade
This table can give a good idea of how frequently you'll need to trade to reach your daily income goal (on average). For example, if you make a single winning trade at 80% return, your profit is $19.2 - but that value alone is pretty meaningless as you don't know how often you'll get that win. But if you know that you're right 60% of the time and the return is 80% you end up with an average profit of about $1.95 per trade, so to make a daily profit of just $10 you'll need to make about 5 trades.