45.29% is the change from 340 to 494
Calculation steps:
[( 494 - 340 ) ÷ 340] x 100 = 45.29%
Formula
Percentage change = [(494 - 340) / 340] x 100
Subtract the new number by the original number
494 - 340 = 154
154 ÷ 340 = 0.45294117647058824
0.45294117647058824 x 100 = 45.29%