-82.08% is the change from 318 to 57
Calculation steps:
[( 57 - 318 ) ÷ 318] x 100 = -82.08%
Formula
Percentage change = [(57 - 318) / 318] x 100
Subtract the new number by the original number
57 - 318 = -261
-261 ÷ 318 = -0.8207547169811321
-0.8207547169811321 x 100 = -82.08%