-87.73% is the change from 497 to 61
Calculation steps:
[( 61 - 497 ) ÷ 497] x 100 = -87.73%
Formula
Percentage change = [(61 - 497) / 497] x 100
Subtract the new number by the original number
61 - 497 = -436
-436 ÷ 497 = -0.8772635814889336
-0.8772635814889336 x 100 = -87.73%