-82.93% is the change from 498 to 85
Calculation steps:
[( 85 - 498 ) ÷ 498] x 100 = -82.93%
Formula
Percentage change = [(85 - 498) / 498] x 100
Subtract the new number by the original number
85 - 498 = -413
-413 ÷ 498 = -0.8293172690763052
-0.8293172690763052 x 100 = -82.93%