-30.72% is the change from 498 to 345
Calculation steps:
[( 345 - 498 ) ÷ 498] x 100 = -30.72%
Formula
Percentage change = [(345 - 498) / 498] x 100
Subtract the new number by the original number
345 - 498 = -153
-153 ÷ 498 = -0.3072289156626506
-0.3072289156626506 x 100 = -30.72%