Question about averages with different n values

I have a data set of different people who have done a different amount of transactions. For each transaction they have to complete some task that counts it as "captured". For example:
Name Trans| New Signups |% eligibleSigned up |# already signed up |Existing signedup
Adam 34 | 5 | 38.5% | 21 | 61.8%
Beverly 4 | 3 | 100.0% | 1 | 25.0%
Lara 33 | 11 | 78.6 % | 19 | 57.6%
William 31 | 6 | 54.5% | 20 | 64.5%
I want to know if useing raw percentage is the right way to go about it or if i should do something to make all the total transactions equal. Using some kinda ttest or something. if you want I can email a total excel spread sheet.