-7.83% is the change from 511 to 471
Calculation steps:
[( 471 - 511 ) ÷ 511] x 100 = -7.83%
Formula
Percentage change = [(471 - 511) / 511] x 100
Subtract the new number by the original number
471 - 511 = -40
-40 ÷ 511 = -0.07827788649706457
-0.07827788649706457 x 100 = -7.83%