-90.3% is the change from 897 to 87
Calculation steps:
[( 87 - 897 ) ÷ 897] x 100 = -90.3%
Formula
Percentage change = [(87 - 897) / 897] x 100
Subtract the new number by the original number
87 - 897 = -810
-810 ÷ 897 = -0.903010033444816
-0.903010033444816 x 100 = -90.3%