About 80% (80.35714285714286%)
18.4% increase.
It is: 46.67% increase rounded
32.35%
54 - 45 = 9 / 45 = 0.2 x 100 = 20% increase
an 80.64% increase
About 80% (80.35714285714286%)
18.4% increase.
It is: 46.67% increase rounded
It is: (45-30)/30 times 100 = 50% increase
32.35%
54 - 45 = 9 / 45 = 0.2 x 100 = 20% increase
It is: (45-40)/40 times 100 = 12.5% increase
450 to 45 is a 90% decrease. 45 to 450 is a 900% increase.
The [percentage increase is 100*(65-45)/45 = 100*20/45 = 44.4%
Percentage changes are meaningless if either of the numbers (before or after the change) is negative. This is because the calculated percentage change from -56 to 16 is the same as the percentage change from +56 to -16 - even though in the first case the amount is increasing and in the second it is decreasing.
85 - 40 = 45 ... this is the size of the increase in numbers. 45/40 = 1.1250 OR 112.50% increase over the base of 40.