100.26% is the change from 388 to 777
Calculation steps:
[( 777 - 388 ) ÷ 388] x 100 = 100.26%
Formula
Percentage change = [(777 - 388) / 388] x 100
Subtract the new number by the original number
777 - 388 = 389
389 ÷ 388 = 1.0025773195876289
1.0025773195876289 x 100 = 100.26%