-84.74% is the change from 557 to 85
Calculation steps:
[( 85 - 557 ) ÷ 557] x 100 = -84.74%
Formula
Percentage change = [(85 - 557) / 557] x 100
Subtract the new number by the original number
85 - 557 = -472
-472 ÷ 557 = -0.8473967684021544
-0.8473967684021544 x 100 = -84.74%