122.35% is the change from 340 to 756
Calculation steps:
[( 756 - 340 ) ÷ 340] x 100 = 122.35%
Formula
Percentage change = [(756 - 340) / 340] x 100
Subtract the new number by the original number
756 - 340 = 416
416 ÷ 340 = 1.223529411764706
1.223529411764706 x 100 = 122.35%