-79.41% is the change from 641 to 132
Calculation steps:
[( 132 - 641 ) ÷ 641] x 100 = -79.41%
Formula
Percentage change = [(132 - 641) / 641] x 100
Subtract the new number by the original number
132 - 641 = -509
-509 ÷ 641 = -0.7940717628705148
-0.7940717628705148 x 100 = -79.41%