-61.4% is the change from 557 to 215
Calculation steps:
[( 215 - 557 ) ÷ 557] x 100 = -61.4%
Formula
Percentage change = [(215 - 557) / 557] x 100
Subtract the new number by the original number
215 - 557 = -342
-342 ÷ 557 = -0.6140035906642729
-0.6140035906642729 x 100 = -61.4%