-69.66% is the change from 923 to 280
Calculation steps:
[( 280 - 923 ) ÷ 923] x 100 = -69.66%
Formula
Percentage change = [(280 - 923) / 923] x 100
Subtract the new number by the original number
280 - 923 = -643
-643 ÷ 923 = -0.6966413867822319
-0.6966413867822319 x 100 = -69.66%