18.99% is the change from 158 to 188
Calculation steps:
[( 188 - 158 ) ÷ 158] x 100 = 18.99%
Formula
Percentage change = [(188 - 158) / 158] x 100
Subtract the new number by the original number
188 - 158 = 30
30 ÷ 158 = 0.189873417721519
0.189873417721519 x 100 = 18.99%