43.75% is the change from 448 to 644
Calculation steps:
[( 644 - 448 ) ÷ 448] x 100 = 43.75%
Formula
Percentage change = [(644 - 448) / 448] x 100
Subtract the new number by the original number
644 - 448 = 196
196 ÷ 448 = 0.4375
0.4375 x 100 = 43.75%