3090.32% is the change from 31 to 989
Calculation steps:
[( 989 - 31 ) ÷ 31] x 100 = 3090.32%
Formula
Percentage change = [(989 - 31) / 31] x 100
Subtract the new number by the original number
989 - 31 = 958
958 ÷ 31 = 30.903225806451612
30.903225806451612 x 100 = 3090.32%