-98.72% is the change from 312 to 4
Calculation steps:
[( 4 - 312 ) ÷ 312] x 100 = -98.72%
Formula
Percentage change = [(4 - 312) / 312] x 100
Subtract the new number by the original number
4 - 312 = -308
-308 ÷ 312 = -0.9871794871794872
-0.9871794871794872 x 100 = -98.72%