-17.55% is the change from 507 to 418
Calculation steps:
[( 418 - 507 ) ÷ 507] x 100 = -17.55%
Formula
Percentage change = [(418 - 507) / 507] x 100
Subtract the new number by the original number
418 - 507 = -89
-89 ÷ 507 = -0.1755424063116371
-0.1755424063116371 x 100 = -17.55%