-90.64% is the change from 897 to 84
Calculation steps:
[( 84 - 897 ) ÷ 897] x 100 = -90.64%
Formula
Percentage change = [(84 - 897) / 897] x 100
Subtract the new number by the original number
84 - 897 = -813
-813 ÷ 897 = -0.9063545150501672
-0.9063545150501672 x 100 = -90.64%