-16.56% is the change from 157 to 131
Calculation steps:
[( 131 - 157 ) ÷ 157] x 100 = -16.56%
Formula
Percentage change = [(131 - 157) / 157] x 100
Subtract the new number by the original number
131 - 157 = -26
-26 ÷ 157 = -0.16560509554140126
-0.16560509554140126 x 100 = -16.56%