-31.24% is the change from 906 to 623
Calculation steps:
[( 623 - 906 ) ÷ 906] x 100 = -31.24%
Formula
Percentage change = [(623 - 906) / 906] x 100
Subtract the new number by the original number
623 - 906 = -283
-283 ÷ 906 = -0.31236203090507725
-0.31236203090507725 x 100 = -31.24%