The endocrine control of the menstrual cycle involves follicle-stimulating hormone (FSH) stimulating the growth of ovarian follicles. At an early stage of development, a primary follicle has a diameter of 45×10−3 mm45 \times 10^{-3}\text{ mm}45×10−3 mm. Under the influence of FSH, it develops into a mature Graafian follicle with a diameter of 22 mm22\text{ mm}22 mm just before ovulation.
Calculate the increase in the diameter of the follicle.
Give your answer to 2 decimal places.