-90.65% is the change from 449 to 42
Calculation steps:
[( 42 - 449 ) ÷ 449] x 100 = -90.65%
Formula
Percentage change = [(42 - 449) / 449] x 100
Subtract the new number by the original number
42 - 449 = -407
-407 ÷ 449 = -0.9064587973273942
-0.9064587973273942 x 100 = -90.65%