Answer:
Around 2.8% to 2.9%, the exact number is 2.898550724637681%
Explanation:
A change from 69 to 71 represents a positive change (increase) of 2.898550724637681% 
 
Use the formula found below on this webpage to find the percent change by replacing the given values: 
 
Percent change = New - Old 
|Old| 
 x 100% 
Percent change = 71 - 69 
|69| 
 x 100 = 2 
69 
 x 100 = 2.898550724637681 % (increase) 
 
Where: 69 is the old value and 71 is the new value. In this case we have a positive change (increase) of 2.898550724637681 percent because the new value is greater than the old value.