83.51% is the change from 388 to 712
Calculation steps:
[( 712 - 388 ) ÷ 388] x 100 = 83.51%
Formula
Percentage change = [(712 - 388) / 388] x 100
Subtract the new number by the original number
712 - 388 = 324
324 ÷ 388 = 0.8350515463917526
0.8350515463917526 x 100 = 83.51%