397.49% is the change from 199 to 990
Calculation steps:
[( 990 - 199 ) ÷ 199] x 100 = 397.49%
Formula
Percentage change = [(990 - 199) / 199] x 100
Subtract the new number by the original number
990 - 199 = 791
791 ÷ 199 = 3.9748743718592965
3.9748743718592965 x 100 = 397.49%