921.05% is the change from 38 to 388
Calculation steps:
[( 388 - 38 ) ÷ 38] x 100 = 921.05%
Formula
Percentage change = [(388 - 38) / 38] x 100
Subtract the new number by the original number
388 - 38 = 350
350 ÷ 38 = 9.210526315789474
9.210526315789474 x 100 = 921.05%