-9.03% is the change from 897 to 816
Calculation steps:
[( 816 - 897 ) ÷ 897] x 100 = -9.03%
Formula
Percentage change = [(816 - 897) / 897] x 100
Subtract the new number by the original number
816 - 897 = -81
-81 ÷ 897 = -0.0903010033444816
-0.0903010033444816 x 100 = -9.03%