-72.96% is the change from 318 to 86
Calculation steps:
[( 86 - 318 ) ÷ 318] x 100 = -72.96%
Formula
Percentage change = [(86 - 318) / 318] x 100
Subtract the new number by the original number
86 - 318 = -232
-232 ÷ 318 = -0.7295597484276729
-0.7295597484276729 x 100 = -72.96%