-91.08% is the change from 897 to 80
Calculation steps:
[( 80 - 897 ) ÷ 897] x 100 = -91.08%
Formula
Percentage change = [(80 - 897) / 897] x 100
Subtract the new number by the original number
80 - 897 = -817
-817 ÷ 897 = -0.9108138238573021
-0.9108138238573021 x 100 = -91.08%