-73.91% is the change from 391 to 102
Calculation steps:
[( 102 - 391 ) ÷ 391] x 100 = -73.91%
Formula
Percentage change = [(102 - 391) / 391] x 100
Subtract the new number by the original number
102 - 391 = -289
-289 ÷ 391 = -0.7391304347826086
-0.7391304347826086 x 100 = -73.91%