-97.33% is the change from 449 to 12
Calculation steps:
[( 12 - 449 ) ÷ 449] x 100 = -97.33%
Formula
Percentage change = [(12 - 449) / 449] x 100
Subtract the new number by the original number
12 - 449 = -437
-437 ÷ 449 = -0.9732739420935412
-0.9732739420935412 x 100 = -97.33%