-69.96% is the change from 829 to 249
Calculation steps:
[( 249 - 829 ) ÷ 829] x 100 = -69.96%
Formula
Percentage change = [(249 - 829) / 829] x 100
Subtract the new number by the original number
249 - 829 = -580
-580 ÷ 829 = -0.6996381182147166
-0.6996381182147166 x 100 = -69.96%