-46.2% is the change from 171 to 92
Calculation steps:
[( 92 - 171 ) ÷ 171] x 100 = -46.2%
Formula
Percentage change = [(92 - 171) / 171] x 100
Subtract the new number by the original number
92 - 171 = -79
-79 ÷ 171 = -0.4619883040935672
-0.4619883040935672 x 100 = -46.2%