-96.43% is the change from 336 to 12
Calculation steps:
[( 12 - 336 ) ÷ 336] x 100 = -96.43%
Formula
Percentage change = [(12 - 336) / 336] x 100
Subtract the new number by the original number
12 - 336 = -324
-324 ÷ 336 = -0.9642857142857143
-0.9642857142857143 x 100 = -96.43%