47.88% is the change from 449 to 664
Calculation steps:
[( 664 - 449 ) ÷ 449] x 100 = 47.88%
Formula
Percentage change = [(664 - 449) / 449] x 100
Subtract the new number by the original number
664 - 449 = 215
215 ÷ 449 = 0.47884187082405344
0.47884187082405344 x 100 = 47.88%