-96.58% is the change from 497 to 17
Calculation steps:
[( 17 - 497 ) ÷ 497] x 100 = -96.58%
Formula
Percentage change = [(17 - 497) / 497] x 100
Subtract the new number by the original number
17 - 497 = -480
-480 ÷ 497 = -0.96579476861167
-0.96579476861167 x 100 = -96.58%