-55.7% is the change from 386 to 171
Calculation steps:
[( 171 - 386 ) ÷ 386] x 100 = -55.7%
Formula
Percentage change = [(171 - 386) / 386] x 100
Subtract the new number by the original number
171 - 386 = -215
-215 ÷ 386 = -0.5569948186528497
-0.5569948186528497 x 100 = -55.7%