In 1985, 45 percent of a document storage capacity was availed by 630 banks. But in 1987, when the capacity was increased, number of banks rose by 82 using overall 25 percent of its new capacity. What was the minimum percent increase in storage capacity.

Percentages are numbers or ratios that are expressed as a fraction of 100. Percentages are often represented by the percent sign, %.  Here are some ways to calculate percentages: To find a percentage of a number: Multiply the number by the decimal form of the percentage. For example, to find 30% of 40, multiply (30/100)(40) = 0.3 x 40 = 12. To convert a decimal to a percentage: Multiply the decimal by 100. For example, .87 x 100 = 87%. To calculate a percentage: Use the formula Percentage = (Value/Total Value) x 100. For example, if there are 10 dogs in a group of 40 animals, the... Show more

Percentages are numbers or ratios that are expressed as a fraction of 100.

Percentages are often represented by the percent sign, %. 

Here are some ways to calculate percentages:
To find a percentage of a number: Multiply the number by the decimal form of the percentage. For example, to find 30% of 40, multiply (30/100)(40) = 0.3 x 40 = 12.
To convert a decimal to a percentage: Multiply the decimal by 100. For example, .87 x 100 = 87%.
To calculate a percentage: Use the formula Percentage = (Value/Total Value) x 100.

For example, if there are 10 dogs in a group of 40 animals, the percentage of dogs is: Percentage of dogs = 10/40 x 100 = 25%.
 

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