-11% is the change from 918 to 817
Calculation steps:
[( 817 - 918 ) ÷ 918] x 100 = -11%
Formula
Percentage change = [(817 - 918) / 918] x 100
Subtract the new number by the original number
817 - 918 = -101
-101 ÷ 918 = -0.11002178649237472
-0.11002178649237472 x 100 = -11%