-83.85% is the change from 799 to 129
Calculation steps:
[( 129 - 799 ) ÷ 799] x 100 = -83.85%
Formula
Percentage change = [(129 - 799) / 799] x 100
Subtract the new number by the original number
129 - 799 = -670
-670 ÷ 799 = -0.8385481852315394
-0.8385481852315394 x 100 = -83.85%