43.26% is the change from 319 to 457
Calculation steps:
[( 457 - 319 ) ÷ 319] x 100 = 43.26%
Formula
Percentage change = [(457 - 319) / 319] x 100
Subtract the new number by the original number
457 - 319 = 138
138 ÷ 319 = 0.43260188087774293
0.43260188087774293 x 100 = 43.26%