-98.39% is the change from 310 to 5
Calculation steps:
[( 5 - 310 ) ÷ 310] x 100 = -98.39%
Formula
Percentage change = [(5 - 310) / 310] x 100
Subtract the new number by the original number
5 - 310 = -305
-305 ÷ 310 = -0.9838709677419355
-0.9838709677419355 x 100 = -98.39%