-82.78% is the change from 331 to 57
Calculation steps:
[( 57 - 331 ) ÷ 331] x 100 = -82.78%
Formula
Percentage change = [(57 - 331) / 331] x 100
Subtract the new number by the original number
57 - 331 = -274
-274 ÷ 331 = -0.8277945619335347
-0.8277945619335347 x 100 = -82.78%