397.56% is the change from 82 to 408
Calculation steps:
[( 408 - 82 ) ÷ 82] x 100 = 397.56%
Formula
Percentage change = [(408 - 82) / 82] x 100
Subtract the new number by the original number
408 - 82 = 326
326 ÷ 82 = 3.975609756097561
3.975609756097561 x 100 = 397.56%