-3.34% is the change from 449 to 434
Calculation steps:
[( 434 - 449 ) ÷ 449] x 100 = -3.34%
Formula
Percentage change = [(434 - 449) / 449] x 100
Subtract the new number by the original number
434 - 449 = -15
-15 ÷ 449 = -0.0334075723830735
-0.0334075723830735 x 100 = -3.34%