-96.63% is the change from 891 to 30
Calculation steps:
[( 30 - 891 ) ÷ 891] x 100 = -96.63%
Formula
Percentage change = [(30 - 891) / 891] x 100
Subtract the new number by the original number
30 - 891 = -861
-861 ÷ 891 = -0.9663299663299664
-0.9663299663299664 x 100 = -96.63%