-66.15% is the change from 390 to 132
Calculation steps:
[( 132 - 390 ) ÷ 390] x 100 = -66.15%
Formula
Percentage change = [(132 - 390) / 390] x 100
Subtract the new number by the original number
132 - 390 = -258
-258 ÷ 390 = -0.6615384615384615
-0.6615384615384615 x 100 = -66.15%