128.24% is the change from 340 to 776
Calculation steps:
[( 776 - 340 ) ÷ 340] x 100 = 128.24%
Formula
Percentage change = [(776 - 340) / 340] x 100
Subtract the new number by the original number
776 - 340 = 436
436 ÷ 340 = 1.2823529411764707
1.2823529411764707 x 100 = 128.24%