-73.1% is the change from 171 to 46
Calculation steps:
[( 46 - 171 ) ÷ 171] x 100 = -73.1%
Formula
Percentage change = [(46 - 171) / 171] x 100
Subtract the new number by the original number
46 - 171 = -125
-125 ÷ 171 = -0.7309941520467836
-0.7309941520467836 x 100 = -73.1%