The following table shows the annual profit of a company (in ₹lakh).

The period which has the maximum percentage increase in profit over the previous year is:

Percentage increase in profit in year 2015-2016 = $$\frac{690 - 625}{625} \times 100 = \frac{65}{625} \times 100$$ = 10.4%

Percentage increase in profit in year 2016-2017 = $$\frac{725 - 690}{690} \times 100 = \frac{35}{690} \times 100$$ = 5.07%

Percentage increase in profit in year 2017-2018 = $$\frac{775 - 725}{725} \times 100 = \frac{50}{725} \times 100$$ = 6.89%

Percentage increase in profit in year 2018-2019 = $$\frac{815 - 775}{775} \times 100 = \frac{}{775} \times 100$$ = 5.16

$$\therefore$$ The maximum percentage increase in profit over the previous year is 2015-2016.