-15.46% is the change from 498 to 421
Calculation steps:
[( 421 - 498 ) ÷ 498] x 100 = -15.46%
Formula
Percentage change = [(421 - 498) / 498] x 100
Subtract the new number by the original number
421 - 498 = -77
-77 ÷ 498 = -0.15461847389558234
-0.15461847389558234 x 100 = -15.46%