-8.72% is the change from 917 to 837
Calculation steps:
[( 837 - 917 ) ÷ 917] x 100 = -8.72%
Formula
Percentage change = [(837 - 917) / 917] x 100
Subtract the new number by the original number
837 - 917 = -80
-80 ÷ 917 = -0.08724100327153762
-0.08724100327153762 x 100 = -8.72%