-97.99% is the change from 897 to 18
Calculation steps:
[( 18 - 897 ) ÷ 897] x 100 = -97.99%
Formula
Percentage change = [(18 - 897) / 897] x 100
Subtract the new number by the original number
18 - 897 = -879
-879 ÷ 897 = -0.979933110367893
-0.979933110367893 x 100 = -97.99%