14.29% is the change from 448 to 512
Calculation steps:
[( 512 - 448 ) ÷ 448] x 100 = 14.29%
Formula
Percentage change = [(512 - 448) / 448] x 100
Subtract the new number by the original number
512 - 448 = 64
64 ÷ 448 = 0.14285714285714285
0.14285714285714285 x 100 = 14.29%