-48.59% is the change from 319 to 164
Calculation steps:
[( 164 - 319 ) ÷ 319] x 100 = -48.59%
Formula
Percentage change = [(164 - 319) / 319] x 100
Subtract the new number by the original number
164 - 319 = -155
-155 ÷ 319 = -0.48589341692789967
-0.48589341692789967 x 100 = -48.59%