98.71% is the change from 388 to 771
Calculation steps:
[( 771 - 388 ) ÷ 388] x 100 = 98.71%
Formula
Percentage change = [(771 - 388) / 388] x 100
Subtract the new number by the original number
771 - 388 = 383
383 ÷ 388 = 0.9871134020618557
0.9871134020618557 x 100 = 98.71%