-73.49% is the change from 664 to 176
Calculation steps:
[( 176 - 664 ) ÷ 664] x 100 = -73.49%
Formula
Percentage change = [(176 - 664) / 664] x 100
Subtract the new number by the original number
176 - 664 = -488
-488 ÷ 664 = -0.7349397590361446
-0.7349397590361446 x 100 = -73.49%