-73.35% is the change from 319 to 85
Calculation steps:
[( 85 - 319 ) ÷ 319] x 100 = -73.35%
Formula
Percentage change = [(85 - 319) / 319] x 100
Subtract the new number by the original number
85 - 319 = -234
-234 ÷ 319 = -0.7335423197492164
-0.7335423197492164 x 100 = -73.35%