-15.79% is the change from 57 to 48
Calculation steps:
[( 48 - 57 ) ÷ 57] x 100 = -15.79%
Formula
Percentage change = [(48 - 57) / 57] x 100
Subtract the new number by the original number
48 - 57 = -9
-9 ÷ 57 = -0.15789473684210525
-0.15789473684210525 x 100 = -15.79%