-94.34% is the change from 318 to 18
Calculation steps:
[( 18 - 318 ) ÷ 318] x 100 = -94.34%
Formula
Percentage change = [(18 - 318) / 318] x 100
Subtract the new number by the original number
18 - 318 = -300
-300 ÷ 318 = -0.9433962264150944
-0.9433962264150944 x 100 = -94.34%