-50.81% is the change from 557 to 274
Calculation steps:
[( 274 - 557 ) ÷ 557] x 100 = -50.81%
Formula
Percentage change = [(274 - 557) / 557] x 100
Subtract the new number by the original number
274 - 557 = -283
-283 ÷ 557 = -0.5080789946140036
-0.5080789946140036 x 100 = -50.81%