-99.04% is the change from 311 to 3
Calculation steps:
[( 3 - 311 ) ÷ 311] x 100 = -99.04%
Formula
Percentage change = [(3 - 311) / 311] x 100
Subtract the new number by the original number
3 - 311 = -308
-308 ÷ 311 = -0.9903536977491961
-0.9903536977491961 x 100 = -99.04%