-69.49% is the change from 816 to 249
Calculation steps:
[( 249 - 816 ) ÷ 816] x 100 = -69.49%
Formula
Percentage change = [(249 - 816) / 816] x 100
Subtract the new number by the original number
249 - 816 = -567
-567 ÷ 816 = -0.6948529411764706
-0.6948529411764706 x 100 = -69.49%