-51.35% is the change from 557 to 271
Calculation steps:
[( 271 - 557 ) ÷ 557] x 100 = -51.35%
Formula
Percentage change = [(271 - 557) / 557] x 100
Subtract the new number by the original number
271 - 557 = -286
-286 ÷ 557 = -0.5134649910233393
-0.5134649910233393 x 100 = -51.35%