-81.79% is the change from 313 to 57
Calculation steps:
[( 57 - 313 ) ÷ 313] x 100 = -81.79%
Formula
Percentage change = [(57 - 313) / 313] x 100
Subtract the new number by the original number
57 - 313 = -256
-256 ÷ 313 = -0.8178913738019169
-0.8178913738019169 x 100 = -81.79%