-13.61% is the change from 507 to 438
Calculation steps:
[( 438 - 507 ) ÷ 507] x 100 = -13.61%
Formula
Percentage change = [(438 - 507) / 507] x 100
Subtract the new number by the original number
438 - 507 = -69
-69 ÷ 507 = -0.13609467455621302
-0.13609467455621302 x 100 = -13.61%