71.43% is the change from 448 to 768
Calculation steps:
[( 768 - 448 ) ÷ 448] x 100 = 71.43%
Formula
Percentage change = [(768 - 448) / 448] x 100
Subtract the new number by the original number
768 - 448 = 320
320 ÷ 448 = 0.7142857142857143
0.7142857142857143 x 100 = 71.43%