Papa John's tumbles after same store sales miss big (PZZA)

Papa John's Pizza International is tumbling on Wednesday after the company reported fourth-quarter earnings on Tuesday afternoon. 
The American pizza company announced fourth-quarter earnings that increased from last year and beat analysts expectations, however, same-store sales growth fell short. 
Here are the numbers: 
Earnings: $0.88 a share versus $0.66 expected.
Revenue: $439.62 million versus $447.4 million expected.
North American same-store sales growth: Up 3.8%