-8.2% is the change from 488 to 448
Calculation steps:
[( 448 - 488 ) ÷ 488] x 100 = -8.2%
Formula
Percentage change = [(448 - 488) / 488] x 100
Subtract the new number by the original number
448 - 488 = -40
-40 ÷ 488 = -0.08196721311475409
-0.08196721311475409 x 100 = -8.2%