388.89% is the change from 81 to 396
Calculation steps:
[( 396 - 81 ) ÷ 81] x 100 = 388.89%
Formula
Percentage change = [(396 - 81) / 81] x 100
Subtract the new number by the original number
396 - 81 = 315
315 ÷ 81 = 3.888888888888889
3.888888888888889 x 100 = 388.89%