131.2% is the change from 391 to 904
Calculation steps:
[( 904 - 391 ) ÷ 391] x 100 = 131.2%
Formula
Percentage change = [(904 - 391) / 391] x 100
Subtract the new number by the original number
904 - 391 = 513
513 ÷ 391 = 1.3120204603580563
1.3120204603580563 x 100 = 131.2%