-10.1% is the change from 891 to 801
Calculation steps:
[( 801 - 891 ) ÷ 891] x 100 = -10.1%
Formula
Percentage change = [(801 - 891) / 891] x 100
Subtract the new number by the original number
801 - 891 = -90
-90 ÷ 891 = -0.10101010101010101
-0.10101010101010101 x 100 = -10.1%