-5.21% is the change from 557 to 528
Calculation steps:
[( 528 - 557 ) ÷ 557] x 100 = -5.21%
Formula
Percentage change = [(528 - 557) / 557] x 100
Subtract the new number by the original number
528 - 557 = -29
-29 ÷ 557 = -0.05206463195691203
-0.05206463195691203 x 100 = -5.21%