18 increased to 45 is a change of +150%
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18 is 40% of 45.
45 is 18 percent of 250.
18 is 40% of 45.
18 is what percent of 45= 18 / 45= 0.4Converting decimal to a percentage:0.4 * 100 = 40%
First you take the difference between the numbers (45 - 18 = 27). Then take that number and divide it by the original number. So 27/18 = 1.5 Then multiply by 100 for the percent. 1.5 x 100 = 150%.