108.9% is the change from 191 to 399
Calculation steps:
[( 399 - 191 ) ÷ 191] x 100 = 108.9%
Formula
Percentage change = [(399 - 191) / 191] x 100
Subtract the new number by the original number
399 - 191 = 208
208 ÷ 191 = 1.0890052356020943
1.0890052356020943 x 100 = 108.9%