19.75% is the change from 157 to 188
Calculation steps:
[( 188 - 157 ) ÷ 157] x 100 = 19.75%
Formula
Percentage change = [(188 - 157) / 157] x 100
Subtract the new number by the original number
188 - 157 = 31
31 ÷ 157 = 0.19745222929936307
0.19745222929936307 x 100 = 19.75%