-88.48% is the change from 677 to 78
Calculation steps:
[( 78 - 677 ) ÷ 677] x 100 = -88.48%
Formula
Percentage change = [(78 - 677) / 677] x 100
Subtract the new number by the original number
78 - 677 = -599
-599 ÷ 677 = -0.8847858197932054
-0.8847858197932054 x 100 = -88.48%