-96.23% is the change from 318 to 12
Calculation steps:
[( 12 - 318 ) ÷ 318] x 100 = -96.23%
Formula
Percentage change = [(12 - 318) / 318] x 100
Subtract the new number by the original number
12 - 318 = -306
-306 ÷ 318 = -0.9622641509433962
-0.9622641509433962 x 100 = -96.23%