-91.42% is the change from 897 to 77
Calculation steps:
[( 77 - 897 ) ÷ 897] x 100 = -91.42%
Formula
Percentage change = [(77 - 897) / 897] x 100
Subtract the new number by the original number
77 - 897 = -820
-820 ÷ 897 = -0.9141583054626533
-0.9141583054626533 x 100 = -91.42%