-89.14% is the change from 313 to 34
Calculation steps:
[( 34 - 313 ) ÷ 313] x 100 = -89.14%
Formula
Percentage change = [(34 - 313) / 313] x 100
Subtract the new number by the original number
34 - 313 = -279
-279 ÷ 313 = -0.8913738019169329
-0.8913738019169329 x 100 = -89.14%