-35.74% is the change from 498 to 320
Calculation steps:
[( 320 - 498 ) ÷ 498] x 100 = -35.74%
Formula
Percentage change = [(320 - 498) / 498] x 100
Subtract the new number by the original number
320 - 498 = -178
-178 ÷ 498 = -0.357429718875502
-0.357429718875502 x 100 = -35.74%