-85.68% is the change from 391 to 56
Calculation steps:
[( 56 - 391 ) ÷ 391] x 100 = -85.68%
Formula
Percentage change = [(56 - 391) / 391] x 100
Subtract the new number by the original number
56 - 391 = -335
-335 ÷ 391 = -0.8567774936061381
-0.8567774936061381 x 100 = -85.68%