-21.81% is the change from 917 to 717
Calculation steps:
[( 717 - 917 ) ÷ 917] x 100 = -21.81%
Formula
Percentage change = [(717 - 917) / 917] x 100
Subtract the new number by the original number
717 - 917 = -200
-200 ÷ 917 = -0.21810250817884405
-0.21810250817884405 x 100 = -21.81%