-96.87% is the change from 989 to 31
Calculation steps:
[( 31 - 989 ) ÷ 989] x 100 = -96.87%
Formula
Percentage change = [(31 - 989) / 989] x 100
Subtract the new number by the original number
31 - 989 = -958
-958 ÷ 989 = -0.9686552072800809
-0.9686552072800809 x 100 = -96.87%