-79.68% is the change from 497 to 101
Calculation steps:
[( 101 - 497 ) ÷ 497] x 100 = -79.68%
Formula
Percentage change = [(101 - 497) / 497] x 100
Subtract the new number by the original number
101 - 497 = -396
-396 ÷ 497 = -0.7967806841046278
-0.7967806841046278 x 100 = -79.68%