-75.6% is the change from 664 to 162
Calculation steps:
[( 162 - 664 ) ÷ 664] x 100 = -75.6%
Formula
Percentage change = [(162 - 664) / 664] x 100
Subtract the new number by the original number
162 - 664 = -502
-502 ÷ 664 = -0.7560240963855421
-0.7560240963855421 x 100 = -75.6%