-69.31% is the change from 391 to 120
Calculation steps:
[( 120 - 391 ) ÷ 391] x 100 = -69.31%
Formula
Percentage change = [(120 - 391) / 391] x 100
Subtract the new number by the original number
120 - 391 = -271
-271 ÷ 391 = -0.6930946291560103
-0.6930946291560103 x 100 = -69.31%