-73.19% is the change from 664 to 178
Calculation steps:
[( 178 - 664 ) ÷ 664] x 100 = -73.19%
Formula
Percentage change = [(178 - 664) / 664] x 100
Subtract the new number by the original number
178 - 664 = -486
-486 ÷ 664 = -0.7319277108433735
-0.7319277108433735 x 100 = -73.19%