-81.84% is the change from 457 to 83
Calculation steps:
[( 83 - 457 ) ÷ 457] x 100 = -81.84%
Formula
Percentage change = [(83 - 457) / 457] x 100
Subtract the new number by the original number
83 - 457 = -374
-374 ÷ 457 = -0.8183807439824945
-0.8183807439824945 x 100 = -81.84%