-98.83% is the change from 771 to 9
Calculation steps:
[( 9 - 771 ) ÷ 771] x 100 = -98.83%
Formula
Percentage change = [(9 - 771) / 771] x 100
Subtract the new number by the original number
9 - 771 = -762
-762 ÷ 771 = -0.9883268482490273
-0.9883268482490273 x 100 = -98.83%