-48.55% is the change from 449 to 231
Calculation steps:
[( 231 - 449 ) ÷ 449] x 100 = -48.55%
Formula
Percentage change = [(231 - 449) / 449] x 100
Subtract the new number by the original number
231 - 449 = -218
-218 ÷ 449 = -0.48552338530066813
-0.48552338530066813 x 100 = -48.55%