137.5% is the change from 168 to 399
Calculation steps:
[( 399 - 168 ) ÷ 168] x 100 = 137.5%
Formula
Percentage change = [(399 - 168) / 168] x 100
Subtract the new number by the original number
399 - 168 = 231
231 ÷ 168 = 1.375
1.375 x 100 = 137.5%
Example