Variation B's observed conversion rate () was higher than variation A's conversion rate (). You can be 95% confident that this result is a consequence of the changes you made and not a result of random chance.
The observed difference in conversion rate () isn't big enough to declare a significant winner. There is no real difference in performance between A and B or you need to collect more data.
Possible SRM alert
Assuming you intented to have a 50% / 50% split, a Sample Ratio Mismatch (SRM) check indicates there might be a problem with your distribution.
The expected distributions of variation A and B.
Conversion Rate Control
Conversions A / Visitors A
Conversion Rate B
Conversions B / Visitors B
Relative uplift in Conversion Rate
CRB - CRA / CRA
( CRB - CRA ) / SEdifference
Standard error A
( CRA * (1-CRA ) / VisitorsA)1/2
Standard error B
( CRB * (1-CRB ) / VisitorsB)1/2
Std. Error of difference
SEdifference = ( SEA2 + SEB2 )1/2