42.95% is the change from 319 to 456
Calculation steps:
[( 456 - 319 ) ÷ 319] x 100 = 42.95%
Formula
Percentage change = [(456 - 319) / 319] x 100
Subtract the new number by the original number
456 - 319 = 137
137 ÷ 319 = 0.42946708463949845
0.42946708463949845 x 100 = 42.95%