-15.19% is the change from 507 to 430
Calculation steps:
[( 430 - 507 ) ÷ 507] x 100 = -15.19%
Formula
Percentage change = [(430 - 507) / 507] x 100
Subtract the new number by the original number
430 - 507 = -77
-77 ÷ 507 = -0.15187376725838264
-0.15187376725838264 x 100 = -15.19%