-82.73% is the change from 330 to 57
Calculation steps:
[( 57 - 330 ) ÷ 330] x 100 = -82.73%
Formula
Percentage change = [(57 - 330) / 330] x 100
Subtract the new number by the original number
57 - 330 = -273
-273 ÷ 330 = -0.8272727272727273
-0.8272727272727273 x 100 = -82.73%