-91.03% is the change from 390 to 35
Calculation steps:
[( 35 - 390 ) ÷ 390] x 100 = -91.03%
Formula
Percentage change = [(35 - 390) / 390] x 100
Subtract the new number by the original number
35 - 390 = -355
-355 ÷ 390 = -0.9102564102564102
-0.9102564102564102 x 100 = -91.03%