-84.68% is the change from 555 to 85
Calculation steps:
[( 85 - 555 ) ÷ 555] x 100 = -84.68%
Formula
Percentage change = [(85 - 555) / 555] x 100
Subtract the new number by the original number
85 - 555 = -470
-470 ÷ 555 = -0.8468468468468469
-0.8468468468468469 x 100 = -84.68%