-81.54% is the change from 390 to 72
Calculation steps:
[( 72 - 390 ) ÷ 390] x 100 = -81.54%
Formula
Percentage change = [(72 - 390) / 390] x 100
Subtract the new number by the original number
72 - 390 = -318
-318 ÷ 390 = -0.8153846153846154
-0.8153846153846154 x 100 = -81.54%