-80.3% is the change from 670 to 132
Calculation steps:
[( 132 - 670 ) ÷ 670] x 100 = -80.3%
Formula
Percentage change = [(132 - 670) / 670] x 100
Subtract the new number by the original number
132 - 670 = -538
-538 ÷ 670 = -0.8029850746268656
-0.8029850746268656 x 100 = -80.3%