-56.14% is the change from 171 to 75
Calculation steps:
[( 75 - 171 ) ÷ 171] x 100 = -56.14%
Formula
Percentage change = [(75 - 171) / 171] x 100
Subtract the new number by the original number
75 - 171 = -96
-96 ÷ 171 = -0.5614035087719298
-0.5614035087719298 x 100 = -56.14%