-45.1% is the change from 816 to 448
Calculation steps:
[( 448 - 816 ) ÷ 816] x 100 = -45.1%
Formula
Percentage change = [(448 - 816) / 816] x 100
Subtract the new number by the original number
448 - 816 = -368
-368 ÷ 816 = -0.45098039215686275
-0.45098039215686275 x 100 = -45.1%