-85.89% is the change from 397 to 56
Calculation steps:
[( 56 - 397 ) ÷ 397] x 100 = -85.89%
Formula
Percentage change = [(56 - 397) / 397] x 100
Subtract the new number by the original number
56 - 397 = -341
-341 ÷ 397 = -0.8589420654911839
-0.8589420654911839 x 100 = -85.89%