-36.83% is the change from 391 to 247
Calculation steps:
[( 247 - 391 ) ÷ 391] x 100 = -36.83%
Formula
Percentage change = [(247 - 391) / 391] x 100
Subtract the new number by the original number
247 - 391 = -144
-144 ÷ 391 = -0.36828644501278773
-0.36828644501278773 x 100 = -36.83%