-81.93% is the change from 498 to 90
Calculation steps:
[( 90 - 498 ) ÷ 498] x 100 = -81.93%
Formula
Percentage change = [(90 - 498) / 498] x 100
Subtract the new number by the original number
90 - 498 = -408
-408 ÷ 498 = -0.8192771084337349
-0.8192771084337349 x 100 = -81.93%