-20.86% is the change from 906 to 717
Calculation steps:
[( 717 - 906 ) ÷ 906] x 100 = -20.86%
Formula
Percentage change = [(717 - 906) / 906] x 100
Subtract the new number by the original number
717 - 906 = -189
-189 ÷ 906 = -0.20860927152317882
-0.20860927152317882 x 100 = -20.86%