-13.33% is the change from 585 to 507
Calculation steps:
[( 507 - 585 ) ÷ 585] x 100 = -13.33%
Formula
Percentage change = [(507 - 585) / 585] x 100
Subtract the new number by the original number
507 - 585 = -78
-78 ÷ 585 = -0.13333333333333333
-0.13333333333333333 x 100 = -13.33%