-97.44% is the change from 391 to 10
Calculation steps:
[( 10 - 391 ) ÷ 391] x 100 = -97.44%
Formula
Percentage change = [(10 - 391) / 391] x 100
Subtract the new number by the original number
10 - 391 = -381
-381 ÷ 391 = -0.9744245524296675
-0.9744245524296675 x 100 = -97.44%