-89.47% is the change from 665 to 70
Calculation steps:
[( 70 - 665 ) ÷ 665] x 100 = -89.47%
Formula
Percentage change = [(70 - 665) / 665] x 100
Subtract the new number by the original number
70 - 665 = -595
-595 ÷ 665 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%