-82.67% is the change from 479 to 83
Calculation steps:
[( 83 - 479 ) ÷ 479] x 100 = -82.67%
Formula
Percentage change = [(83 - 479) / 479] x 100
Subtract the new number by the original number
83 - 479 = -396
-396 ÷ 479 = -0.826722338204593
-0.826722338204593 x 100 = -82.67%