-50.11% is the change from 449 to 224
Calculation steps:
[( 224 - 449 ) ÷ 449] x 100 = -50.11%
Formula
Percentage change = [(224 - 449) / 449] x 100
Subtract the new number by the original number
224 - 449 = -225
-225 ÷ 449 = -0.5011135857461024
-0.5011135857461024 x 100 = -50.11%