By how much percentage is the increase in sale from 2010 to 2011 of model D more/less than that of model C?

Increase in sales of model D from 2010 to 2011,

= 16% of 2884 - 16% of 2222

= 16% of 662

= 105.92

Increase in sales of model C from 2010 to 2011,

= 26% of 2884 - 22% of 2222

= 749.84 - 488.84 

= 261

Increase in sales of model C is more than sales of model D from 2010 to 2011. 

Required percentage = $$\frac{261 - 105.92}{261} \times 100 = \frac{155.08}{261} \times 100 = 59$$%

Hence, option C is the correct answer.