-27.49% is the change from 171 to 124
Calculation steps:
[( 124 - 171 ) ÷ 171] x 100 = -27.49%
Formula
Percentage change = [(124 - 171) / 171] x 100
Subtract the new number by the original number
124 - 171 = -47
-47 ÷ 171 = -0.27485380116959063
-0.27485380116959063 x 100 = -27.49%