-58.06% is the change from 391 to 164
Calculation steps:
[( 164 - 391 ) ÷ 391] x 100 = -58.06%
Formula
Percentage change = [(164 - 391) / 391] x 100
Subtract the new number by the original number
164 - 391 = -227
-227 ÷ 391 = -0.5805626598465473
-0.5805626598465473 x 100 = -58.06%