397.01% is the change from 201 to 999
Calculation steps:
[( 999 - 201 ) ÷ 201] x 100 = 397.01%
Formula
Percentage change = [(999 - 201) / 201] x 100
Subtract the new number by the original number
999 - 201 = 798
798 ÷ 201 = 3.970149253731343
3.970149253731343 x 100 = 397.01%