49.89% is the change from 447 to 670
Calculation steps:
[( 670 - 447 ) ÷ 447] x 100 = 49.89%
Formula
Percentage change = [(670 - 447) / 447] x 100
Subtract the new number by the original number
670 - 447 = 223
223 ÷ 447 = 0.4988814317673378
0.4988814317673378 x 100 = 49.89%