-18.15% is the change from 507 to 415
Calculation steps:
[( 415 - 507 ) ÷ 507] x 100 = -18.15%
Formula
Percentage change = [(415 - 507) / 507] x 100
Subtract the new number by the original number
415 - 507 = -92
-92 ÷ 507 = -0.1814595660749507
-0.1814595660749507 x 100 = -18.15%