input: Write a python function to calculate compound interest.
  assert calculate_compound_interest(1000, 4.4, 2) == 89.85600000000022
  assert calculate_compound_interest(1500, 5, 3) == 238.140625
  assert calculate_compound_interest(2000, 3.5, 5) == 374.3451691874995
output: def calculate_compound_interest(principal, rate, time):
      return principal * ((1 + rate / 100) ** time - 1)