87.63% is the change from 388 to 728
Calculation steps:
[( 728 - 388 ) ÷ 388] x 100 = 87.63%
Formula
Percentage change = [(728 - 388) / 388] x 100
Subtract the new number by the original number
728 - 388 = 340
340 ÷ 388 = 0.8762886597938144
0.8762886597938144 x 100 = 87.63%