-96.17% is the change from 313 to 12
Calculation steps:
[( 12 - 313 ) ÷ 313] x 100 = -96.17%
Formula
Percentage change = [(12 - 313) / 313] x 100
Subtract the new number by the original number
12 - 313 = -301
-301 ÷ 313 = -0.9616613418530351
-0.9616613418530351 x 100 = -96.17%