Percents & Percent Change

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula for percent error?

Back

Percent error = (|Estimated Value - Actual Value| / Estimated Value) x 100.

Front

Convert 25% to a decimal.

Back

0.25

Front

Convert 0.75 to a percent.

Back

75%.

Front

What is the percent increase from 50 to 75?

Back

50%.

Front

If a shirt costs $40 and is on sale for $30, what is the percent decrease?

Back

25%.

Front

What is 10% of 200?

Back

20.

Front

How do you find the original value if you know the percent increase and the new value?

Back

Original Value = New Value / (1 + Percent Increase as a decimal).

Front

What is 60% as a decimal?

Back

0.60.