-99.09% is the change from 331 to 3
Calculation steps:
[( 3 - 331 ) ÷ 331] x 100 = -99.09%
Formula
Percentage change = [(3 - 331) / 331] x 100
Subtract the new number by the original number
3 - 331 = -328
-328 ÷ 331 = -0.9909365558912386
-0.9909365558912386 x 100 = -99.09%