-21.9% is the change from 918 to 717
Calculation steps:
[( 717 - 918 ) ÷ 918] x 100 = -21.9%
Formula
Percentage change = [(717 - 918) / 918] x 100
Subtract the new number by the original number
717 - 918 = -201
-201 ÷ 918 = -0.21895424836601307
-0.21895424836601307 x 100 = -21.9%