-96.66% is the change from 897 to 30
Calculation steps:
[( 30 - 897 ) ÷ 897] x 100 = -96.66%
Formula
Percentage change = [(30 - 897) / 897] x 100
Subtract the new number by the original number
30 - 897 = -867
-867 ÷ 897 = -0.9665551839464883
-0.9665551839464883 x 100 = -96.66%