-20.83% is the change from 48 to 38
Calculation steps:
[( 38 - 48 ) ÷ 48] x 100 = -20.83%
Formula
Percentage change = [(38 - 48) / 48] x 100
Subtract the new number by the original number
38 - 48 = -10
-10 ÷ 48 = -0.20833333333333334
-0.20833333333333334 x 100 = -20.83%