-87.43% is the change from 557 to 70
Calculation steps:
[( 70 - 557 ) ÷ 557] x 100 = -87.43%
Formula
Percentage change = [(70 - 557) / 557] x 100
Subtract the new number by the original number
70 - 557 = -487
-487 ÷ 557 = -0.874326750448833
-0.874326750448833 x 100 = -87.43%