-81.68% is the change from 453 to 83
Calculation steps:
[( 83 - 453 ) ÷ 453] x 100 = -81.68%
Formula
Percentage change = [(83 - 453) / 453] x 100
Subtract the new number by the original number
83 - 453 = -370
-370 ÷ 453 = -0.8167770419426048
-0.8167770419426048 x 100 = -81.68%