Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to find percent increase [title] Gather the figures you are going to use, so that you can plug them into your percent increase formula. [step] This will require two numbers that indicate the same statistic or topic, usually gathered at two different dates. [title] Find a calculator.

Ending1: [step] Mathematical calculators work well, as a calculator is essentially an instrument that uses the data to perform calculations. [substeps] Try something online, through word processing software like excel. Ending2: [step] A simple calculator on a phone or computer will also do. [title] Sit down with a pen, paper and calculator in order to write out your formula and solve it. Ending3: [step] You will probably be using the internet to remember the decimal places for all equations in your math book, but you should come up with a calculator at the start of the process. [title] Know what a percent increase will be. Ending4: [step] There are many smartphone calculator software that will do the math for you. Go to mywindow and find the app to help you create your percentage increase formula.

Answer format: ending1/ending2/ending3/ending4