-9% is the change from 511 to 465
Calculation steps:
[( 465 - 511 ) ÷ 511] x 100 = -9%
Formula
Percentage change = [(465 - 511) / 511] x 100
Subtract the new number by the original number
465 - 511 = -46
-46 ÷ 511 = -0.09001956947162426
-0.09001956947162426 x 100 = -9%