How many instances are there in the graph where the difference in sale of refrigrators was greater or lesser by 35% or more as compared to the previous year?

Percentage in sale of refrigrator,

For red = $$\frac{15 - 10}{10} \times 100 = 50$$%

For Blue = $$\frac{16 - 7}{7} \times 100 = 128.5$$%

For Lemon = $$\frac{9 - 24}{24} \times 100 = -62.5$$%

For Grey = $$\frac{7 - 25}{25} \times 100 = -72.5$$%

For White = $$\frac{2 - 13}{13} \times 100 = -84.6$$%

There are 5 instances where the difference in sale of refrigrator was greater or lesser than 35% or more as compared to the previous year.

Hence, option B is the correct answer.