-0.32% is the change from 313 to 312
Calculation steps:
[( 312 - 313 ) ÷ 313] x 100 = -0.32%
Formula
Percentage change = [(312 - 313) / 313] x 100
Subtract the new number by the original number
312 - 313 = -1
-1 ÷ 313 = -0.003194888178913738
-0.003194888178913738 x 100 = -0.32%