-17.83% is the change from 157 to 129
Calculation steps:
[( 129 - 157 ) ÷ 157] x 100 = -17.83%
Formula
Percentage change = [(129 - 157) / 157] x 100
Subtract the new number by the original number
129 - 157 = -28
-28 ÷ 157 = -0.17834394904458598
-0.17834394904458598 x 100 = -17.83%