-20.32% is the change from 507 to 404
Calculation steps:
[( 404 - 507 ) ÷ 507] x 100 = -20.32%
Formula
Percentage change = [(404 - 507) / 507] x 100
Subtract the new number by the original number
404 - 507 = -103
-103 ÷ 507 = -0.20315581854043394
-0.20315581854043394 x 100 = -20.32%