123.53% is the change from 340 to 760
Calculation steps:
[( 760 - 340 ) ÷ 340] x 100 = 123.53%
Formula
Percentage change = [(760 - 340) / 340] x 100
Subtract the new number by the original number
760 - 340 = 420
420 ÷ 340 = 1.2352941176470589
1.2352941176470589 x 100 = 123.53%