-57.69% is the change from 657 to 278
Calculation steps:
[( 278 - 657 ) ÷ 657] x 100 = -57.69%
Formula
Percentage change = [(278 - 657) / 657] x 100
Subtract the new number by the original number
278 - 657 = -379
-379 ÷ 657 = -0.5768645357686454
-0.5768645357686454 x 100 = -57.69%