-10.91% is the change from 917 to 817
Calculation steps:
[( 817 - 917 ) ÷ 917] x 100 = -10.91%
Formula
Percentage change = [(817 - 917) / 917] x 100
Subtract the new number by the original number
817 - 917 = -100
-100 ÷ 917 = -0.10905125408942203
-0.10905125408942203 x 100 = -10.91%