-80.12% is the change from 664 to 132
Calculation steps:
[( 132 - 664 ) ÷ 664] x 100 = -80.12%
Formula
Percentage change = [(132 - 664) / 664] x 100
Subtract the new number by the original number
132 - 664 = -532
-532 ÷ 664 = -0.8012048192771084
-0.8012048192771084 x 100 = -80.12%