-67.78% is the change from 869 to 280
Calculation steps:
[( 280 - 869 ) ÷ 869] x 100 = -67.78%
Formula
Percentage change = [(280 - 869) / 869] x 100
Subtract the new number by the original number
280 - 869 = -589
-589 ÷ 869 = -0.6777905638665133
-0.6777905638665133 x 100 = -67.78%