-90.75% is the change from 335 to 31
Calculation steps:
[( 31 - 335 ) ÷ 335] x 100 = -90.75%
Formula
Percentage change = [(31 - 335) / 335] x 100
Subtract the new number by the original number
31 - 335 = -304
-304 ÷ 335 = -0.9074626865671642
-0.9074626865671642 x 100 = -90.75%