-21.02% is the change from 157 to 124
Calculation steps:
[( 124 - 157 ) ÷ 157] x 100 = -21.02%
Formula
Percentage change = [(124 - 157) / 157] x 100
Subtract the new number by the original number
124 - 157 = -33
-33 ÷ 157 = -0.21019108280254778
-0.21019108280254778 x 100 = -21.02%