The following pie-charts show the number of students studying in different departments of an institute during the academic years 2019 and 2020. The total number of students was 2000 and 2400 in academic years 2019 and 2020, respectively.

What is the percentage increase or decrease in the number of students of Engineering in 2020 as compared to 2019? (correct to 2 decimal places)

10.77%

13% = \(\frac{13}{100}\) & 12% = \(\frac{3}{25}\)

Number of students in engineering in 2019 = \(\frac{13}{100}\) × 2000 = 260

Number of students in engineering in 2020 = \(\frac{3}{25}\)× 2400 = 288

Percentage increase in 2020 comparative to 2019 = \(\frac{28}{260}\)×100

= 10.77%