-31.9% is the change from 906 to 617
Calculation steps:
[( 617 - 906 ) ÷ 906] x 100 = -31.9%
Formula
Percentage change = [(617 - 906) / 906] x 100
Subtract the new number by the original number
617 - 906 = -289
-289 ÷ 906 = -0.3189845474613687
-0.3189845474613687 x 100 = -31.9%