43.53% is the change from 340 to 488
Calculation steps:
[( 488 - 340 ) ÷ 340] x 100 = 43.53%
Formula
Percentage change = [(488 - 340) / 340] x 100
Subtract the new number by the original number
488 - 340 = 148
148 ÷ 340 = 0.43529411764705883
0.43529411764705883 x 100 = 43.53%