125.29% is the change from 340 to 766
Calculation steps:
[( 766 - 340 ) ÷ 340] x 100 = 125.29%
Formula
Percentage change = [(766 - 340) / 340] x 100
Subtract the new number by the original number
766 - 340 = 426
426 ÷ 340 = 1.2529411764705882
1.2529411764705882 x 100 = 125.29%