Respuesta :

Answer:

16.7% (to 3sf)

Step-by-step explanation:

Percentage decrease

= [tex]\frac{42-35}{42}[/tex] × 100%

= [tex]\frac{7}{42}[/tex] × 100%

= [tex]\frac{1}{6}[/tex] × 100%

= 16.7% (to 3sf)