-42.76% is the change from 449 to 257
Calculation steps:
[( 257 - 449 ) ÷ 449] x 100 = -42.76%
Formula
Percentage change = [(257 - 449) / 449] x 100
Subtract the new number by the original number
257 - 449 = -192
-192 ÷ 449 = -0.42761692650334077
-0.42761692650334077 x 100 = -42.76%