-86.47% is the change from 909 to 123
Calculation steps:
[( 123 - 909 ) ÷ 909] x 100 = -86.47%
Formula
Percentage change = [(123 - 909) / 909] x 100
Subtract the new number by the original number
123 - 909 = -786
-786 ÷ 909 = -0.8646864686468647
-0.8646864686468647 x 100 = -86.47%