-1.66% is the change from 906 to 891
Calculation steps:
[( 891 - 906 ) ÷ 906] x 100 = -1.66%
Formula
Percentage change = [(891 - 906) / 906] x 100
Subtract the new number by the original number
891 - 906 = -15
-15 ÷ 906 = -0.016556291390728478
-0.016556291390728478 x 100 = -1.66%