-19.75% is the change from 157 to 126
Calculation steps:
[( 126 - 157 ) ÷ 157] x 100 = -19.75%
Formula
Percentage change = [(126 - 157) / 157] x 100
Subtract the new number by the original number
126 - 157 = -31
-31 ÷ 157 = -0.19745222929936307
-0.19745222929936307 x 100 = -19.75%