-31.97% is the change from 907 to 617
Calculation steps:
[( 617 - 907 ) ÷ 907] x 100 = -31.97%
Formula
Percentage change = [(617 - 907) / 907] x 100
Subtract the new number by the original number
617 - 907 = -290
-290 ÷ 907 = -0.3197353914002205
-0.3197353914002205 x 100 = -31.97%