-7.1% is the change from 507 to 471
Calculation steps:
[( 471 - 507 ) ÷ 507] x 100 = -7.1%
Formula
Percentage change = [(471 - 507) / 507] x 100
Subtract the new number by the original number
471 - 507 = -36
-36 ÷ 507 = -0.07100591715976332
-0.07100591715976332 x 100 = -7.1%