-10.05% is the change from 557 to 501
Calculation steps:
[( 501 - 557 ) ÷ 557] x 100 = -10.05%
Formula
Percentage change = [(501 - 557) / 557] x 100
Subtract the new number by the original number
501 - 557 = -56
-56 ÷ 557 = -0.10053859964093358
-0.10053859964093358 x 100 = -10.05%