-89.7% is the change from 689 to 71
Calculation steps:
[( 71 - 689 ) ÷ 689] x 100 = -89.7%
Formula
Percentage change = [(71 - 689) / 689] x 100
Subtract the new number by the original number
71 - 689 = -618
-618 ÷ 689 = -0.8969521044992743
-0.8969521044992743 x 100 = -89.7%