40.44% is the change from 319 to 448
Calculation steps:
[( 448 - 319 ) ÷ 319] x 100 = 40.44%
Formula
Percentage change = [(448 - 319) / 319] x 100
Subtract the new number by the original number
448 - 319 = 129
129 ÷ 319 = 0.4043887147335423
0.4043887147335423 x 100 = 40.44%