-81.96% is the change from 388 to 70
Calculation steps:
[( 70 - 388 ) ÷ 388] x 100 = -81.96%
Formula
Percentage change = [(70 - 388) / 388] x 100
Subtract the new number by the original number
70 - 388 = -318
-318 ÷ 388 = -0.8195876288659794
-0.8195876288659794 x 100 = -81.96%