-84.89% is the change from 814 to 123
Calculation steps:
[( 123 - 814 ) ÷ 814] x 100 = -84.89%
Formula
Percentage change = [(123 - 814) / 814] x 100
Subtract the new number by the original number
123 - 814 = -691
-691 ÷ 814 = -0.8488943488943489
-0.8488943488943489 x 100 = -84.89%