-85.67% is the change from 677 to 97
Calculation steps:
[( 97 - 677 ) ÷ 677] x 100 = -85.67%
Formula
Percentage change = [(97 - 677) / 677] x 100
Subtract the new number by the original number
97 - 677 = -580
-580 ÷ 677 = -0.8567208271787297
-0.8567208271787297 x 100 = -85.67%