-81.7% is the change from 448 to 82
Calculation steps:
[( 82 - 448 ) ÷ 448] x 100 = -81.7%
Formula
Percentage change = [(82 - 448) / 448] x 100
Subtract the new number by the original number
82 - 448 = -366
-366 ÷ 448 = -0.8169642857142857
-0.8169642857142857 x 100 = -81.7%