-89.82% is the change from 678 to 69
Calculation steps:
[( 69 - 678 ) ÷ 678] x 100 = -89.82%
Formula
Percentage change = [(69 - 678) / 678] x 100
Subtract the new number by the original number
69 - 678 = -609
-609 ÷ 678 = -0.8982300884955752
-0.8982300884955752 x 100 = -89.82%