-79.03% is the change from 186 to 39
Calculation steps:
[( 39 - 186 ) ÷ 186] x 100 = -79.03%
Formula
Percentage change = [(39 - 186) / 186] x 100
Subtract the new number by the original number
39 - 186 = -147
-147 ÷ 186 = -0.7903225806451613
-0.7903225806451613 x 100 = -79.03%