The following table gives the sales of an electronic chip over 5 years. Find percentage increase in sales in year 2014 to the year 2012?

20% 21.05% 22% 25%

21.05%

Increase in sale in 2014 is = 69 - 57 = 12 %age increase = \(\frac{12}{57}\) × 100% = 21.05%