-56.55% is the change from 557 to 242
Calculation steps:
[( 242 - 557 ) ÷ 557] x 100 = -56.55%
Formula
Percentage change = [(242 - 557) / 557] x 100
Subtract the new number by the original number
242 - 557 = -315
-315 ÷ 557 = -0.5655296229802513
-0.5655296229802513 x 100 = -56.55%