-17.02% is the change from 47 to 39
Calculation steps:
[( 39 - 47 ) ÷ 47] x 100 = -17.02%
Formula
Percentage change = [(39 - 47) / 47] x 100
Subtract the new number by the original number
39 - 47 = -8
-8 ÷ 47 = -0.1702127659574468
-0.1702127659574468 x 100 = -17.02%