-16.5% is the change from 497 to 415
Calculation steps:
[( 415 - 497 ) ÷ 497] x 100 = -16.5%
Formula
Percentage change = [(415 - 497) / 497] x 100
Subtract the new number by the original number
415 - 497 = -82
-82 ÷ 497 = -0.16498993963782696
-0.16498993963782696 x 100 = -16.5%