-98.71% is the change from 311 to 4
Calculation steps:
[( 4 - 311 ) ÷ 311] x 100 = -98.71%
Formula
Percentage change = [(4 - 311) / 311] x 100
Subtract the new number by the original number
4 - 311 = -307
-307 ÷ 311 = -0.9871382636655949
-0.9871382636655949 x 100 = -98.71%