-42.25% is the change from 497 to 287
Calculation steps:
[( 287 - 497 ) ÷ 497] x 100 = -42.25%
Formula
Percentage change = [(287 - 497) / 497] x 100
Subtract the new number by the original number
287 - 497 = -210
-210 ÷ 497 = -0.4225352112676056
-0.4225352112676056 x 100 = -42.25%