-83.71% is the change from 485 to 79
Calculation steps:
[( 79 - 485 ) ÷ 485] x 100 = -83.71%
Formula
Percentage change = [(79 - 485) / 485] x 100
Subtract the new number by the original number
79 - 485 = -406
-406 ÷ 485 = -0.8371134020618557
-0.8371134020618557 x 100 = -83.71%