20% increase

25% decrease

25% increase

20% decrease (all these for diagram A)

and then for diagram b the options are

37.5 increase

37.5 decrease

60% increase

60% decrease

25% decrease

25% increase

20% decrease (all these for diagram A)

and then for diagram b the options are

37.5 increase

37.5 decrease

60% increase

60% decrease