-75.45% is the change from 664 to 163
Calculation steps:
[( 163 - 664 ) ÷ 664] x 100 = -75.45%
Formula
Percentage change = [(163 - 664) / 664] x 100
Subtract the new number by the original number
163 - 664 = -501
-501 ÷ 664 = -0.7545180722891566
-0.7545180722891566 x 100 = -75.45%