-82.53% is the change from 475 to 83
Calculation steps:
[( 83 - 475 ) ÷ 475] x 100 = -82.53%
Formula
Percentage change = [(83 - 475) / 475] x 100
Subtract the new number by the original number
83 - 475 = -392
-392 ÷ 475 = -0.8252631578947368
-0.8252631578947368 x 100 = -82.53%