how is the 90% confidence level different that the 95% confidence interval ? and why?

95% confidence interval results:
Proportion	Count	Total	Sample Prop.	Std. Err.	L. Limit	U. Limit
p	72	331	0.21752266	0.022676402	0.17307773	0.26196759

90% confidence interval results:
proportion	Count	Total	Sample Prop.	Std. Err.	L. Limit	U. Limit
p	72	331	0.21752266	0.022676402	0.1802233	0.25482202