Answer :
The percent increase from 31.1 to 98.1 can be calculated by finding the difference between the two values, dividing it by the original value, and then multiplying by 100. Therefore, the percent increase from 31.1 to 98.1 is approximately 215.5%.
To calculate the percent increase, we first find the difference between the final value (98.1) and the initial value (31.1), which is 98.1 - 31.1 = 67.
The result will be rounded to the nearest tenth of a percent and expressed with a percent sign.
Next, we divide the difference by the original value: 67 / 31.1 = 2.155.
To convert this to a percentage, we multiply by 100: 2.155 * 100 = 215.5.
Rounding to the nearest tenth of a percent, the percent increase is approximately 215.5%.
Therefore, the percent increase from 31.1 to 98.1 is approximately 215.5%.
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