-45.37% is the change from 820 to 448
Calculation steps:
[( 448 - 820 ) ÷ 820] x 100 = -45.37%
Formula
Percentage change = [(448 - 820) / 820] x 100
Subtract the new number by the original number
448 - 820 = -372
-372 ÷ 820 = -0.45365853658536587
-0.45365853658536587 x 100 = -45.37%