-79.2% is the change from 274 to 57
Calculation steps:
[( 57 - 274 ) ÷ 274] x 100 = -79.2%
Formula
Percentage change = [(57 - 274) / 274] x 100
Subtract the new number by the original number
57 - 274 = -217
-217 ÷ 274 = -0.791970802919708
-0.791970802919708 x 100 = -79.2%