The two numbers must be expressed in the same unit. To convert 495g to kg, it will be divided by 1000

  495g = \(\frac{495}{1000}\)

  = 0.495kg

  To express in percentage, 0.495 will be divided by 16.5 and then multiplied by 100

  % will be added to the answer \(\frac{0.4950}{16.5}\) x 100

  = 3%