-89.66% is the change from 677 to 70
Calculation steps:
[( 70 - 677 ) ÷ 677] x 100 = -89.66%
Formula
Percentage change = [(70 - 677) / 677] x 100
Subtract the new number by the original number
70 - 677 = -607
-607 ÷ 677 = -0.896602658788774
-0.896602658788774 x 100 = -89.66%