-80.4% is the change from 403 to 79
Calculation steps:
[( 79 - 403 ) ÷ 403] x 100 = -80.4%
Formula
Percentage change = [(79 - 403) / 403] x 100
Subtract the new number by the original number
79 - 403 = -324
-324 ÷ 403 = -0.8039702233250621
-0.8039702233250621 x 100 = -80.4%