-0.11% is the change from 910 to 909
Calculation steps:
[( 909 - 910 ) ÷ 910] x 100 = -0.11%
Formula
Percentage change = [(909 - 910) / 910] x 100
Subtract the new number by the original number
909 - 910 = -1
-1 ÷ 910 = -0.001098901098901099
-0.001098901098901099 x 100 = -0.11%