-80.18% is the change from 666 to 132
Calculation steps:
[( 132 - 666 ) ÷ 666] x 100 = -80.18%
Formula
Percentage change = [(132 - 666) / 666] x 100
Subtract the new number by the original number
132 - 666 = -534
-534 ÷ 666 = -0.8018018018018018
-0.8018018018018018 x 100 = -80.18%