49.55% is the change from 448 to 670
Calculation steps:
[( 670 - 448 ) ÷ 448] x 100 = 49.55%
Formula
Percentage change = [(670 - 448) / 448] x 100
Subtract the new number by the original number
670 - 448 = 222
222 ÷ 448 = 0.4955357142857143
0.4955357142857143 x 100 = 49.55%