-89.54% is the change from 679 to 71
Calculation steps:
[( 71 - 679 ) ÷ 679] x 100 = -89.54%
Formula
Percentage change = [(71 - 679) / 679] x 100
Subtract the new number by the original number
71 - 679 = -608
-608 ÷ 679 = -0.8954344624447718
-0.8954344624447718 x 100 = -89.54%