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www.reference.com/world-view/calculate-exponential-growth-decay-191965d352b7cc7a

Exponential growth and decay can be determined with the following equation: N = (NI)(e^kt). In this equation, "N" refers to the final population, "NI" is the starting population, "t" is the time over which the growth or decay took place and the "k" represents the growth or decay constant. If necessa

www.reference.com/article/percentages-calculated-c4cf4def163fed0d

Percentages are calculated by finding what portion a fractional amount takes up out of 100. By comparing a fractional amount to x/100, a percentage can be found.

www.reference.com/article/calculate-percentage-basic-calculator-d938a32eddb34656

Percentage can be calculated on a basic calculator by multiplying with the percent button. If the percent button is not present, the percent amount can be converted to a decimal and that can be multiplied instead.

www.reference.com/article/good-percentage-calculators-63f03f12b80baaab

Jari Jokinen's and the Math Easy Solutions percentage calculators both allow a user to find percentages by entering values into common percentage verbiage used in word problems. The Math Is Fun percentage calculator allows someone to compare two numbers percentage-wise.

www.reference.com/article/calculate-percentage-difference-38956f3f15801b03

Calculate the percentage difference of two numbers by dividing the difference of the numbers by their average. Multiply this answer by 100 to determine the percentage difference.

www.reference.com/world-view/work-out-percentages-calculator-19e299bdce0df388

To determine a percentage, divide the actual number by the total possible number, and multiply the result by 100. For example, if four out of five doctors agree on something, enter the equation in a calculator as "4 ÷ 5 x 100." The result, 80, is the percentage.

www.reference.com/article/work-out-percentages-calculator-8be14675e72be0eb

A calculator is always helpful when determining percentages, but you can easily compute percentages without a calculator. A pencil and paper might be helpful as you do this.

www.reference.com/world-view/calculate-percentage-two-numbers-d45f72c1a20c26bb

To calculate the percentage between two numbers, determine the type of percentage needed. Then, subtract one number from the other, and divide it based on the type of percentage. Finally, multiply the answer by 100 to find the percentage.

www.reference.com/article/can-person-calculate-percentage-40b7fcd24fa1aa5f

To calculate a percentage, simply divide one number into the other and multiply by 100. The order of division is important, and is determined by the wording of the question.

www.reference.com/article/calculate-percentage-increases-7418cdab6a096dd0

To find a percentage increase, divide the difference between the new and old value by the old value, explains TutorVista.com. The result is then multiplied by 100 to give the percentage.