What is the percent of increase from 50 to 90?

1 Answer
smendyka
Mar 7, 2017

See the entire solution process and result below:

Explanation:

The formula for calculating the percentage or rate of change between two values is:

#p = (N - O)/O * 100#

Where:

#p# is the percent change - what we are solving for in this problem
#N# is the New Value - 90 for this problem
#O# is the Old Value - 50 for this problem

Substituting and solving for #p# gives:

#p = (90 - 50)/50 * 100#

#p = 40/50 * 100#

#p = 4000/50#

#p = 80#

There was an 80% increase.

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