-79% is the change from 319 to 67
Calculation steps:
[( 67 - 319 ) ÷ 319] x 100 = -79%
Formula
Percentage change = [(67 - 319) / 319] x 100
Subtract the new number by the original number
67 - 319 = -252
-252 ÷ 319 = -0.7899686520376176
-0.7899686520376176 x 100 = -79%