-89.61% is the change from 664 to 69
Calculation steps:
[( 69 - 664 ) ÷ 664] x 100 = -89.61%
Formula
Percentage change = [(69 - 664) / 664] x 100
Subtract the new number by the original number
69 - 664 = -595
-595 ÷ 664 = -0.8960843373493976
-0.8960843373493976 x 100 = -89.61%