-96.97% is the change from 989 to 30
Calculation steps:
[( 30 - 989 ) ÷ 989] x 100 = -96.97%
Formula
Percentage change = [(30 - 989) / 989] x 100
Subtract the new number by the original number
30 - 989 = -959
-959 ÷ 989 = -0.9696663296258847
-0.9696663296258847 x 100 = -96.97%