38.24% is the change from 340 to 470
Calculation steps:
[( 470 - 340 ) ÷ 340] x 100 = 38.24%
Formula
Percentage change = [(470 - 340) / 340] x 100
Subtract the new number by the original number
470 - 340 = 130
130 ÷ 340 = 0.38235294117647056
0.38235294117647056 x 100 = 38.24%